I have moderate light plant. swords,ambius,java fern,jungle grass, penny wort,wisteria, and allot of others that i do not know what they are called. my lights run for 8 hours a day because I am running 2 x 54 watt 12,000k and 2 x 54 6,500k lights (t-5 light fixture). as far as phosphates I am...