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Yes, very fine black/grey gravel

Thanks 😊 Toyosports 2" Stainless

180cm x 40cm x 40cm - 280 liters. Plus 40 liter Sump.

2 x faulty tubes. Replaced under warranty and ask working fine since.

@@craigtorridon ok thanks unfortunately mine wouldn't turn on the next day, its just flashing so I think the ballast is gone will probably get a new unit

I got 10 tubes for £100 from my garden centre, I got them running with a led driver from a bathroom fixture with the appropriate output. The 1047mm tubes run in the range of 60 to 80 volts and 30 watts. I got some 900mm ones to play with. The "multilux" bulbs have a T5 pins end on them but I think they blow up if you put in a T5 fixture without a driver.

I have the same problem. don't know what to do?