RED Stains on rocks
Hey everyone, i have this red type of stains growing on my rock. i Had a problem of nitrates and Po4 though this is not a problem anymore and the red is not Cayano as it does not come off like cayano does. i noticed its fast growth since i have switched from t5 to high powered 15000k Led lights. here are 2 pictures about 2 weeks from each other.
Thanks
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