What lighting do you have? It already looks pretty bright to me!
I have 3 6500k t8's ATM
It just looks bright because I took the pic during a wc and the tank wasn't completely full
Im currently dosing 6ml of excell daily
I have not had to fertilize this tank yet(except root tabs on start up). I actually still have to do large wc to keep my N and P down......it's like the tank is even planted. The plants aren't dying but they aren't growing either.