So i am running 2watts per gallon on my planted tank and am getting decent growth from my dwarf sag and crypts would it be better if i ran with 4 watts per gallon instead?
Just sell my 108 watt light and get a 216 for my 55gal.
What brand is your light? If it is almost anything except a FishNeedIt brand you already have very high light. You need to be using pressurized CO2, and a complete fertilizer dosing scheme. Low light plants just grow much faster with high light, provided they also have the nutrients needed to grow faster.