hello, my tank is having a brown algae bloom ,had my water tested at my local salt fish store . water tested good. I have about 200 lbs of live sand and 125 lbs of live rock in my 110. i have noticed the sand turning light brown lately . I do have a submersible uv sterilizer in the tank.and a protein skimmer running .lighting system is 2 odyssea 4 bulb 2 12k daylight and 2 blue actinic that are on about 6hrs aday. . any suggestions of how to cure this . i would send picts but i am new to this fourm stuff. thanks
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