I have been using 1 aquarium light on my 20 gal tank plus one household compact flurescent for a total of 30 watts. Plaants have been growing like gangbusters for the past 8 months but now are slowing down. My fert routine has not changed.I am not doing anything fancy-- just have an anubias,vals and java ferns, plus a few giant hygro. The hygros are the ones that are really showing they are unhappy.
the Aquarium bulbs are the screw in type that make the tank look pink.
the household bulbs are "daylight' bulbs and were a special brought in at the local "Canadian Tire" store.they were in a pack of soft white bulbs as a sample of a coming product. i have been back to the store several times but they tell me there are no plans to have daylight bulbs again-- at least not for a few years as people like the soft white instead. i have contacted as many light bulb companies( Ge, sylvania, Philips) as i can and they all say they have no plans to market daylight bulbs in canada. The ge bulbs you all talk about here are also not avail. here.
If i use household screw in compact flourescent bulbs of the soft white variety will there be enough of what the plants need to have them grow, do you think??
I can buy more aquarium bulbs but at $29.00 they are a bit too expensive to replace every 6-8 months. I have 3 tanks With spots for 2 bulbs on each.