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Well, it looks like we have an infestation. It started as a small spot and then began carpeting the tank. I did 1/3 tank change and immediately shut down the Fluval Plant spectrum LED lights (we have two). I also ordered some Ultralife blue green slime stain remover. I'm a little hesitant to shut down the basking & UVB lamps until the Ultralife arrives from Amazon. I'm thinking once I can treat the water, we should do a total 3 day blackout and perhaps another water change. The water quality has been good and we try and keep the tank clean.

Would anyone have any other thoughts/advise/suggestions on the matter?

Thanks

I haven't had to deal with that before, but the reviews on it seem good. More frequent water changes and maybe you can just have the lights on for a shorter amount of time until this is settled.

While waiting for the Ultralife, we decided to try Boyd's Chemiclean and see if that clears it up. The tank was only 10 days sisnce the last water change. We'll see how it goes.

The Boyd’s did a great job! I gave it 72 hrs and the Cyanobacteria cleared right up. Just did a 20% water change and put the charcoal filters back in the 2217’s. The kids seem happy!

Great to hear it, cheers for clear water

Photo of results

Looks very nice, especially with the sand.