I also had 3 different types. I cut back to 2 now just because i'm scared of it going sexual. I have a 4 chamber fuge, so i try different things to get rid of the Cyano
. The best thing i've found is to add a small powerhead and a few snails. No cyano
at all.... The problem for me is that i would need 4 powerheads. I have a mixture of snails in there, so i'm not sure which ones eat it. but its all gone. I have had a problem with nitrates since day one.. constantly 10 ppm
never higher, never lower. I have tried everything possible to get them down to zero. Even when i added the fuge they diped down, and were right back to 10ppm within a couple days. After I added the powerhead they disappeared. Totally dropped to Zero, and have never climbed higher. i'm not sure why this worked, and i'm not sure it will work for everyone, but it sure worked for me.