Are two 24 watt GLO T5 HO's to much light for a 20 gallon high running on DIY CO2? I have a Hagen Ladder and this Red Sea Co2 system so thats about 2 liters total of DIY CO2. I just added another light because I felt that the just one 24 watt wouldnt be enought light. Should I raise the lights to the highest level? Or just go with one light. Is it possible to grow Gloss with DIY CO2? Any experts please advise.