how much is to much lighting. RIght now i have a 10 gallon tank with a 96 watt power compact light on it which obviously means i'm getting 9.6 watts per gallon. Is this too much. I just recently got hairy mushrooms and they were doing fine but now they don't spread out as much as they used to. IS this because of lighting or what. I have them in good position with good flow and my water is pretty good. I don't know can someone give me some help.