Thanks for all the ideas. i have tried to brush them away on a regular basis and they kept coming back...I removed the rock and scrubbed with a stainless brush-they came back! Right now I have all my rock in my sump with no light...they appear to have receded-just not sure they are gone! I put a link on my original message that shows them-not a great pic, but I will try to find a better one.
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180g tank(6x2x2) w/170lbs LR, 2-250W 1-400W Halides, 2-3ft t5 Actinics,H&S 1260 200 Skimmer, 1-Tunze 6000stream w/controller, 1-6060stream, 70g sump, 30g refugium Neptune controller, Sequence Hammerhead inline return, Lifeguard 25W UV, 1-Tunze osmolator, 1-Tunze wavebox, 1/4Hp Pacific Coast chiller, MarineTech calcium reactor
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