first off my tank is a 55 gal. with a 40 gal. long sump/ref underneath. the sump/ref has about a quarter of it sectioned off were water enters from main tank and i have skimmer,heater in that section the rest is love rock about 40lbs and a 4.5 inch layer of fine sand. the main tank has the same 4.5 inches sand and about 65lbs live rock. 3 gobies ,3 firefish, 3 blue cromis, 1 urchin, to brittle stars. frogspawn,tubestra,varis mushrooms and gorgonia. i just got new lighs 1.5 months ago their 4 54watt ho t-5 and 4 moon lights. their 2 10,000k and to actinics. my old lights were office type t-5 same wattage. ph-8.4 am.-0 nitrite-0 nitrate-0(had some when first cycled but it never came back) phosphate was 5.0 1 month ago but have since been lowered to .5 .now i have serious cynobacteria(red slime algae) and its not really in the brite light areas but it grow where theres the most water movement. i always thought you needed good water movement to help prevent this. i have been sphioning the algae out tring to avoid spreading it.by