Bro,
Lighting is just oone of the parameters you have too be aware of...but looking at your water parameters, it seems that your PO4 is way too high at 0.15. You need to reduce it to between 0.03-0.07. Best if you get a Hanna PO4 tester...Salifert and other test kits will not be as accurate as you as want it to be.
Rgds