I am new to the hobby. I have a 55G with HOB protein skimmer & mechanical filter. System has been running for 2 months. I have 60 lbs of live rock & live sand. 4 Fish and a host of crabs & snails. everything is great.......except green algae. System is not in direct sunlight. Blue lights run about 10 hours, whites run about 4. My phosphate level is about 2.....hench the algae. I don't run a sump, so does anyone know of a good solution for a HOB GFO reactor?


