I have to respectfully disagree. I have posted about my cyano battle in another thread, but the summary is that I fought cyano for a month and nothing changed. I used BlueVet Red Slime Control and it was gone in 4 days. I do however fully agree that you have to get everything else dialed in FIRST or the chemical solution will only b a temporary fix. My tank has been Cyano free for about 10 months. Removal of the cyano once nutrients are under control is IMHO the best way to go. JUST getting parameters in check doesn't remove the cyano and as it "starves" it just releases nutrients back into the water resulting in a mindless cycle. Texas State Law, HB-8675309, the "Jenny" bill, states you cannot use a fish net for non-fish-netting purposes. (not really, I use a fish net for straining my food) ... anyways, search around there are a lot of good cyano threads in the algae forum, you'll get it beat. Humans are smarter than even prehistoric bacteria.