QUOTE (turnip @ Aug 25 2009, 06:46 AM)

Keep everything clean, thoroughly clean everything after each grow
Use an airstone in the tank
Flush the pipes through every 5 days or so
Before potting up soak those black squares that you put into the bottom of the pot in water.
Follow the instructions
Otherwise its a piece of piss...good luck
What airstones/pump you using mate, do you mean one stone per double ?