Thankyou so much for making lucid video on water preparation. Eagerly waiting for your next video on Biofloc for answer on best way to form floc in Biofloc system using fertilizer.
Is it possible to put shrimp in an Integrated Multi-trophic Aquaculture set up where the shrimp only eats the waste from the finfish in a marine fish cage?
Hi what is the stocking density for the vannamei in extensive and semi- intensive in open ponds by relying in diatoms? And can we apply nitrate even already have a shrimp in pond in brackish water with a 7.4 ph and 32 Celsius
What happened during rainy season? Its always cloudy and no bright sun light... My water PH and DO doesnt seems to fluctuate much, (PH 7.3-7.8) (DO 3.2-5.3) is it because there are no sun light or there is something wrong? I am still waiting for bright sunny day to give nitrate fertilizer on the water.. I did lime and nitrate the soil...
Hi Charles, true for when we grow pure diatoms in the lab or hatchery. No need to supplement silica in pond waters, it is not a limiting factor for diatom levels we can reach any way. I have tested also adding silica once though and it actually backfired on me in the sense that dinoflagellates bloomed (dinoflagellates also have silica shells). Luckily they were not toxic.
@@MrChristian2982 Hi Christian, silicate makes no difference in ponds. If you water is crystal, oceanic clear you will need a higher Nitrate dose like 100kg/ha and a phosphate based fertilizer too like TSP at 10kg/ha for it to work, and must be a full sunny cloudless day
Using such mode of water prepration and providing 12 hp paddle wheel aeration on 1 hectare pond of 1.5 metre depth how much of production one can take?
Hi..thanks for providing details related to the planktation where I am more interested in the growth of diatoms…so the application of Sodium nitrate has to be 10-25 kg per ha.. 1) but wanted to know whether this fertiliser should be ok if we apply in any type of pond or not I.e..sand soil, black soil or mix..?? 2) The water that will be filled is with near by creek, bore water and canal water as well..would this fertiliser have a good impact in these water combinations as well?? 3) We are liming the pond with 12 bags per ha and 18 Kgs of zinc per ha.. Is it the right combination along with sodium nitrate? Please suggest your expert opinions on this
@@hashtagfish8542 thanks for your reply..we do apply bleaching powder once the pond is filled with water which is half..@500 kg per ha..so that everything dies off..and then build the plankton with rice barn, yeast, groundnut skin powder..so in this case your suggestion is to apply sodium nitrate post the bleaching powder application on the water..please confirm.. Thanks Raju
@@subashd21 you seem to have a special case , I would never bleach water first unless the surround environment is full of farms with disease AND I'm using a closed ( zero exchange) super intensive biofloc system. In this case I would not use Nitrate. But it seems you have a mixed system. Please drop me an email at j.a.domingos35@gmail.com if you want to discuss it further.
@banukumar444 zinc is important in the feed at about 100 mg/Kg of feed (another item to test of the feed used), but IMO it makes no sense to add to water
Hi..thanks for providing details related to the planktation where I am more interested in the growth of diatoms…so the application of Sodium nitrate has to be 10-25 kg per ha.. 1) but wanted to know whether this fertiliser should be ok if we apply in any type of pond or not I.e..sand soil, black soil or mix..?? 2) The water that will be filled is with near by creek, bore water and canal water as well..would this fertiliser have a good impact in these water combinations as well?? 3) We are liming the pond with 12 bags per ha + 18 kgs per ha and fill the tank with water and apply 24 bags of bleaching powder in order to kill all the animals. Is it the right combination along with sodium nitrate? or should we apply the sodium nitrate post the bleaching powder application? Please suggest your expert opinions on this. Thanks in advance.
@@hashtagfish8542 Here, we usually just add fertilizer to the soil and water.. Then we replacing 10-30% of the water every week... And we dont give any feed..
Hi, Sugianto. Unless you are using crystal clear oceanic water as your intake, still no need for SP3 because it is very likely that there will be sufficient P in the incoming water for getting a good diatom bloom, and also the shrimp feeds already have more than enough phosphorous that will leach to the water to keep the bloom after stocking. Try that with Sodium (or Calcium) Nitrate only and let me know. But if if you have 100% lined ponds I'd go with biofloc system (if you have sufficient aeration for that) because it is much more stable method as I describe in Shrimp #13 video.
@@hashtagfish8542 thank you again for your respond 1) How about urea? no need also? I will try to use Sodium (or Calcium) Nitrate 2) Currently I am using bacteria (bacillus sp.) and still not biofloc system. My ponds around 1600m2 (square) and I think it is difficult to manage biofloc system di large and square ponds. Biofloc system is my dream and good for environment. I read a few books about that and also waiting your next video for guidance :) Actually in next couple weeks I will make a small biofloc test with circular tank 1 m3 outdoor shading. Luckily your #13 video give me good information as a basic start. For future I want to build up circular ponds diameter 20 & 25m. Aerator, blower, electric generator with automatic transfer system is not an issue.
Hello , thanks for all your videos, it is very instructive. I have a question when you mention the fertilization of the pond with sodium nitrates. In india, some semi-intensive farm use fermented rice bran with probiotics to stimulate natural productivity and restore old degraded pond bottom, it is the Aquamimicry concept. Since i'm working in an semi-intensive Organic shrimp farm (Europe specifications) of P Monodon, i wish to use fermented rice bran to stimulate natural zooplancton (copepods) in the pond to biocontrol phytoplancton bloom and provide natural food for shrimps. I wanted to know your point of view about this practices in the case we can not employ sodium nitrate. For your information, we are in an open system without aerators in 10 ha earthern ponds.
Our density is between 9 and 12 juveniles (0.5 - 1 g) / m² Our pond bottom is mainly dark now but we can not measure precisely the amount of OM in the soil. pH after a crop cycle is about between 5.9 and 6.8.
Hi , when your pond is dry measure OM the simple way we recommend in the videos, see detail in the video description. Point is"You can't manage what you don't measure" (not my phrase, but it is true). You need to be systematic if you want to be successful. Bottom is somewhat acidic, so without the full story I would not add any more OM in the pond because more likely it will make things worse for your shrimp.
How do you decide which plankton you want ？Diatome or Chloropyta ？ about the growth curve color I can not see the meaning of multi color ？ what pink and other color represent 🙏🏼 wait, your data is for Vannamei shrimp ？
Hi, yes, this is data of L. vannamei farm I managed. In open systems, we use nitrate and no phosphates to promote diatoms, but all other algae will also be present. This recipe is to give diatoms the best chance to bloom over others. Each color represents the data for a particular shrimp pond. Blue, green and yellow are for ponds with good natural productivity (oxygen and pH fluctuations, good growth and lower FCR). The pink color is data of a pond where I could not get good natural productivity because that bivalve became a pest, sucking all the phytoplankton before copepods could benefit. In turn shrimp growth was poor and FCR was high.
Hi..thanks for providing details related to the planktation where I am more interested in the growth of diatoms…so the application of Sodium nitrate has to be 10-25 kg per ha.. 1) but wanted to know whether this fertiliser should be ok if we apply in any type of pond or not I.e..sand soil, black soil or mix..?? 2) The water that will be filled is with near by creek, bore water and canal water as well..would this fertiliser have a good impact in these water combinations as well?? Please suggest your expert opinions on this Thanks Raju
liner is more costly, but you can surely kill any pathogen left from the previous cycle when you drain the pond and let it dry, which is not entirely possible with earth ponds. Also preparation time is much faster from one cycle to the next. With earth ponds, you cannot do intensive culture (more than 60 m2) because aeration needed stirs up the soil too much clogging the shrimp gills.
it depends on which system and stocking density is indented, this will vary from preparing a diatom dominated system, a biofloc system (next videos) or a hybrid starting with algal based and ending up with a bacteria dominated system...
Thankyou so much for making lucid video on water preparation. Eagerly waiting for your next video on Biofloc for answer on best way to form floc in Biofloc system using fertilizer.
Hope you liked our recent video. In the next one we will talk about how to keep biofloc and water quality stable to the end of the culture
Thankyou so much sir. The video has definitely given answer to my question and after watching the video twice few more doubt of mine has been cleared.
Is it possible to put shrimp in an Integrated Multi-trophic Aquaculture set up where the shrimp only eats the waste from the finfish in a marine fish cage?
Excellent detailed educational video helpful !
Best regards.
Thank you so much for your help! I am going to refer my views to you.
thanks só much
#Fish is more focused on food production aquaculture, but principals are the same. I love your channel, keep up the great work Avatar
@@hashtagfish8542 I wish you could experiment more about diatome plankton.
Thank you for the video
Does this diatom didn't crash if water doesn't have enough nitrate
What is the substitute of sodium nitrate, difficult to find, and what is the ratio in 1 hectare 1meter depth
Hi what is the stocking density for the vannamei in extensive and semi- intensive in open ponds by relying in diatoms? And can we apply nitrate even already have a shrimp in pond in brackish water with a 7.4 ph and 32 Celsius
Can we clean the pond bottom of a earthen pond using slurry pump during 50 -80 days of culture
What happened during rainy season? Its always cloudy and no bright sun light... My water PH and DO doesnt seems to fluctuate much, (PH 7.3-7.8) (DO 3.2-5.3) is it because there are no sun light or there is something wrong? I am still waiting for bright sunny day to give nitrate fertilizer on the water.. I did lime and nitrate the soil...
yes, need more patience in rainy season and cloudy days. Apply the nitrate in lower doses over a few bright mornings.
The good one
For diatom, isnt it we need to maintain silica level as well?
Hi Charles, true for when we grow pure diatoms in the lab or hatchery. No need to supplement silica in pond waters, it is not a limiting factor for diatom levels we can reach any way. I have tested also adding silica once though and it actually backfired on me in the sense that dinoflagellates bloomed (dinoflagellates also have silica shells). Luckily they were not toxic.
@@MrChristian2982 Hi Christian, silicate makes no difference in ponds. If you water is crystal, oceanic clear you will need a higher Nitrate dose like 100kg/ha and a phosphate based fertilizer too like TSP at 10kg/ha for it to work, and must be a full sunny cloudless day
@@MrChristian2982 where is your farm?
can we still use the calcium nitrate even there were already shrimp in the pond? as a maintenance?
Yes of course
Using such mode of water prepration and providing 12 hp paddle wheel aeration on 1 hectare pond of 1.5 metre depth how much of production one can take?
You can expect 500 kg of shrimp per HP if all goes right, so in this case about 6 tones.
Hi..thanks for providing details related to the planktation where I am more interested in the growth of diatoms…so the application of Sodium nitrate has to be 10-25 kg per ha..
1) but wanted to know whether this fertiliser should be ok if we apply in any type of pond or not I.e..sand soil, black soil or mix..??
2) The water that will be filled is with near by creek, bore water and canal water as well..would this fertiliser have a good impact in these water combinations as well??
3) We are liming the pond with 12 bags per ha and 18 Kgs of zinc per ha.. Is it the right combination along with sodium nitrate?
Please suggest your expert opinions on this
did you check the soil pH and organic matter like I taught in the previous video ? what are they ?
@@hashtagfish8542 the Soil PH: 7.0 and organic matter is 3.2
Thanks
Raju
@@subashd21 soil seems fine. Yes use (sodium or calcium) Nitrate for diatom blooms. No need for Zinc, just wasting money.
@@hashtagfish8542 thanks for your reply..we do apply bleaching powder once the pond is filled with water which is half..@500 kg per ha..so that everything dies off..and then build the plankton with rice barn, yeast, groundnut skin powder..so in this case your suggestion is to apply sodium nitrate post the bleaching powder application on the water..please confirm..
Thanks
Raju
@@subashd21 you seem to have a special case , I would never bleach water first unless the surround environment is full of farms with disease AND I'm using a closed ( zero exchange) super intensive biofloc system. In this case I would not use Nitrate. But it seems you have a mixed system. Please drop me an email at j.a.domingos35@gmail.com if you want to discuss it further.
Will chelated zinc removes phosphorus need for plankton development?
Why would one add zinc or chelated zinc?
@@joseantoniosantosdom I had seen farmers in Andhrapradesh applying zinc to pond bed before filling.
@banukumar444 zinc is important in the feed at about 100 mg/Kg of feed (another item to test of the feed used), but IMO it makes no sense to add to water
@@joseantoniosantosdom thank you for the response sir
sir,please make a video on biofloc technology.....
Hi..thanks for providing details related to the planktation where I am more interested in the growth of diatoms…so the application of Sodium nitrate has to be 10-25 kg per ha..
1) but wanted to know whether this fertiliser should be ok if we apply in any type of pond or not I.e..sand soil, black soil or mix..??
2) The water that will be filled is with near by creek, bore water and canal water as well..would this fertiliser have a good impact in these water combinations as well??
3) We are liming the pond with 12 bags per ha + 18 kgs per ha and fill the tank with water and apply 24 bags of bleaching powder in order to kill all the animals. Is it the right combination along with sodium nitrate? or should we apply the sodium nitrate post the bleaching powder application?
Please suggest your expert opinions on this. Thanks in advance.
Hi , there is too much to your question. For a consultancy please email me at j.a.domingos35@gmail.com
Can i use sodium nitrate or calcium nitrate fertilizers for earthen pond? And not the urea fertiizers?
yes, that is correct. And better avoid urea fertilizers - they generate ammonia and lower pH - and encourage cyanobacteria
Sir. Indoor concrete pond. How to prepare quality water for shrimp
See biofloc videos for indoor
Do we need to add probiotic for traditional culture? Do we need continuously to add nitrate whenever turbidity over 50cm? to substitute shrimp feed?
not sure what you mean by traditional, as it varies from country to country. Don't need to add probiotic, but it is usually best than not.
Not sure what you mean by substitute shrimp feed, nothing substitutes the feed...
@@hashtagfish8542 Here, we usually just add fertilizer to the soil and water.. Then we replacing 10-30% of the water every week...
And we dont give any feed..
@@charleskurniawan2950 Hi Charles, that is Okay for extensive farming which may yield about 20g of shrimp per m2 (200kg per hectare).
Hi Jose... you mention "no urea or SP3 for earthen ponds". How about with 100% lined HDPE Ponds? Thanks for feeeback.
Hi, Sugianto. Unless you are using crystal clear oceanic water as your intake, still no need for SP3 because it is very likely that there will be sufficient P in the incoming water for getting a good diatom bloom, and also the shrimp feeds already have more than enough phosphorous that will leach to the water to keep the bloom after stocking. Try that with Sodium (or Calcium) Nitrate only and let me know. But if if you have 100% lined ponds I'd go with biofloc system (if you have sufficient aeration for that) because it is much more stable method as I describe in Shrimp #13 video.
@@hashtagfish8542 thank you again for your respond
1) How about urea? no need also? I will try to use Sodium (or Calcium) Nitrate
2) Currently I am using bacteria (bacillus sp.) and still not biofloc system. My ponds around 1600m2 (square) and I think it is difficult to manage biofloc system di large and square ponds.
Biofloc system is my dream and good for environment. I read a few books about that and also waiting your next video for guidance :)
Actually in next couple weeks I will make a small biofloc test with circular tank 1 m3 outdoor shading. Luckily your #13 video give me good information as a basic start.
For future I want to build up circular ponds diameter 20 & 25m. Aerator, blower, electric generator with automatic transfer system is not an issue.
Hello , thanks for all your videos, it is very instructive.
I have a question when you mention the fertilization of the pond with sodium nitrates. In india, some semi-intensive farm use fermented rice bran with probiotics to stimulate natural productivity and restore old degraded pond bottom, it is the Aquamimicry concept.
Since i'm working in an semi-intensive Organic shrimp farm (Europe specifications) of P Monodon, i wish to use fermented rice bran to stimulate natural zooplancton (copepods) in the pond to biocontrol phytoplancton bloom and provide natural food for shrimps.
I wanted to know your point of view about this practices in the case we can not employ sodium nitrate. For your information, we are in an open system without aerators in 10 ha earthern ponds.
Hi what's your density?
What's is the the organic matter content and pH of different points in the bottom of your ponds?
Our density is between 9 and 12 juveniles (0.5 - 1 g) / m²
Our pond bottom is mainly dark now but we can not measure precisely the amount of OM in the soil. pH after a crop cycle is about between 5.9 and 6.8.
Hi , when your pond is dry measure OM the simple way we recommend in the videos, see detail in the video description. Point is"You can't manage what you don't measure" (not my phrase, but it is true). You need to be systematic if you want to be successful. Bottom is somewhat acidic, so without the full story I would not add any more OM in the pond because more likely it will make things worse for your shrimp.
How do you decide which plankton you want ？Diatome or Chloropyta ？
about the growth curve color I can not see the meaning of multi color ？ what pink and other color represent 🙏🏼
wait, your data is for Vannamei shrimp ？
Hi, yes, this is data of L. vannamei farm I managed.
In open systems, we use nitrate and no phosphates to promote diatoms, but all other algae will also be present. This recipe is to give diatoms the best chance to bloom over others.
Each color represents the data for a particular shrimp pond. Blue, green and yellow are for ponds with good natural productivity (oxygen and pH fluctuations, good growth and lower FCR). The pink color is data of a pond where I could not get good natural productivity because that bivalve became a pest, sucking all the phytoplankton before copepods could benefit. In turn shrimp growth was poor and FCR was high.
@@hashtagfish8542 Thanks. i hope, I know how to read the plankton. color itself is not guarantee.
Hi..thanks for providing details related to the planktation where I am more interested in the growth of diatoms…so the application of Sodium nitrate has to be 10-25 kg per ha..
1) but wanted to know whether this fertiliser should be ok if we apply in any type of pond or not I.e..sand soil, black soil or mix..??
2) The water that will be filled is with near by creek, bore water and canal water as well..would this fertiliser have a good impact in these water combinations as well??
Please suggest your expert opinions on this
Thanks
Raju
How do you connect the ocean to your pond to create brackish water
Hi, with an excavated channel, or use of pipes
Thanks
Thank You 👌
Sir plz give me some advantages n disadvantages of a pond with a liner and earthern pond
liner is more costly, but you can surely kill any pathogen left from the previous cycle when you drain the pond and let it dry, which is not entirely possible with earth ponds. Also preparation time is much faster from one cycle to the next. With earth ponds, you cannot do intensive culture (more than 60 m2) because aeration needed stirs up the soil too much clogging the shrimp gills.
How to maintain water quality and diatoms based on this video untill end of cycle or harvest
Sir what about in liner pond?
it depends on which system and stocking density is indented, this will vary from preparing a diatom dominated system, a biofloc system (next videos) or a hybrid starting with algal based and ending up with a bacteria dominated system...
Whc one is better n profitable?
If you are in a region with diseases, earth ponds are a nightmare
still waiting for part 2 of this video
Pls guide me..thnx