Okay some more info:
Lighting: CF 96 watt Dual Daylight 6,700k/10,000k - on for 8.5 hours/day
CO2: currently dosing with SeaChem Excel - one capful every other day
Nitrates: just tested, looks like 10-15 ppm
Fertilizer: dosing with SeaChem Flourish 2 times a week
As for phosphates, I only...