It looks like your clam needs to be higher up and closer to the lights. You said it's a dual T5HO fixture? What bulbs are you running? If it's one daylight and one actinic, you need to pull the actinic out and get a bulb with better PAR rating. If you want to replace with a bluer bulb, I'd suggest either a UVL Super Actinic, or an Aquascience 22K bulb (or similar). Up a few posts back the clam was about the middle of the tank with its mantle open but was looking a little brown. I'm thinking that your lights are powerful enough pending that the clam is higher still in the tank.
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07-19-2010, 01:46 AM
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