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Discussion Starter · #1 ·
New member, here. I have had this "Red Spot Algae" for years....starts as little red circles and if I let go it grows together in patches. Likes the glass the best but will grow on rocks and filters etc. Doesn't grow on the plants or wood in tank. Can only remove from glass with razor blade. There is no getting off anything else. I've searched on and off over the years and only can find a few examples of it in fresh water like me....and no great info on what is it and how to get rid of. So anyone know exactly what this is and how to get rid of?

Healthy 220 gallon densely planted. Good filtration, water movement. All water parameters where they should be.



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