re-occuring Cyano

[chefpaakk]

Hello all,
I had a cyano problem a month and a bit ago..it was a heaft one and took over the entire tank quickly (under5 days) It was almost neon green in color.

I was suggested at jl aquatics to use chemiclean.. After a few days of research and debate I decided to try it. I followed the instructions to the T and even did a 30% water change opposed to the 20 it suggest. It worked fantastic!! My tank looked incredible!

3 days later, I saw the first bit of red cyano appear. Within a week the red cyano, covered maybe 40% of my sand.

I had read that sometimes a second dose is necessary, so I dosed a second time, after 2 weeks.. Followed the instructions exactly, and had a 30% water change, and another 10% two days later.

It has been a week since this happened, and the cyano has come back and is now covering around 30% of my sand bed.

WTF is going on?!

My nitrates are at 5.0, and my phosphates are at .05...


Help!