Water stayed murky for quite some time and GSA would grow each week, just a little, but still annoying, considering how great my tank was!
So, I use a little LUX meter on my phone to check the lights, one was at 1000 and the other at 1300. I don't know what these readings mean, or how accurate they are, but the difference is what I am interested in. So I swapped out the 1000 with a new T8 6500K. The new bulb is at 1800 BTW.
So that was the first thing, the second issue that I can think of, is that it's been quite a while (4 months or so) since I place my osmocote capsule in the substrate. They have 14% Phosphorus, so I am hoping that putting a bunch of new capsules in the substrate can help get the balance back...
I'll keep y'all posted.