Toxic Green Algae?

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Graysonwolfe

Aquarium Advice Newbie
Joined
Oct 30, 2011
Messages
2
Location
Atlanta, GA
Hello everyone. I have a large stable 6 year old reef with good chemistry and lighting. I believe that I have a toxic specie of mat algae. The water systems in my tanks are all interconnected but isolated by sterilizers. The mat algae in question is in my reef and seahorse tanks. If turbo snails or urchins eat it they die. The snails in the other connected tanks are fine. The fish won't eat it. Has anyone heard of this?

More info and Specs:
Lighting 10 80W T3 lights with 4 250W halide pendants over reef.
Temp - 80 F Specific Grav - 1.026
Ammonia - 0 :) Strontium - 10PPM
Nitrite - 0 :) Magnesium - 1400PPM
Nitrate - 0 :) Copper - 0
Calcium - 480 :) PH - 8.3

The system is fairly heavily loaded with corals, inverts, fish and stingrays. It is filtered by a large refugium, 4 OceanClear filters and 2 large downdraft skimmers. There is 1400 pounds of rock and 300 pounds of sand.
 
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