dont know what is happening lately, i have what i think is cyano but it is extremely dark brown almost black in color. and when you syphon it off it comes off in sheets. its a major pain in the butt. i have test everything i can and everything is good, flow is definitely not an issue i'm assuming its due for bulb changes. the bulbs are only 9 months old and i was planning on changing them at 10 months but i will do it early and hopefully it helps.
anyone have ideas what might cause the outbreak?
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colin
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