What Happens During Filtration and Backwash

[@استغفرالله-ن4ط]

very informative video thanks a lot,
just need to ask are you selling like this apparatus for training purposes ?

[@outrspaced]

omg bro thank you so much for explaining this this is great

[@MiddleClass_MelodiS]

During back wash - sand and anthracite will not mix together?? In longer use???

[@olivertoribio4387]

What is the function of partialization box

[@cunderthesun]

Great video

[@yankeeii]

Great 👍