R rocker_254 New member Sep 13, 2009 #1 The tank is 4 gallons(15 litres) I found an old 30w ballast in my drawer and i am going to buy a 15w tube for it today. so it works out to be a little bit more than 3 watts per gallon. Is this fine?
The tank is 4 gallons(15 litres) I found an old 30w ballast in my drawer and i am going to buy a 15w tube for it today. so it works out to be a little bit more than 3 watts per gallon. Is this fine?