Hi everyone, I have a 20 gallon freshwater tank which is fairly heavily planted. unfortunately and against my better judgement I took the advice of a guy at the LFS
and purchased a full spectrum 15 Watt bulb -despite having read about needing 2-3 Watts per gallon etc. I have been looking for a bulb to replace it, but I am having trouble finding one that will do the job. Can anyone recommend a specific product?