cyanos

I've been constantly cleaning the aquarium and battling this thing for over a month now, using diy coral snow, plus corals snow+bacteria for the last 3 days, while also dosing phosphates as they're tanked, and don't seem to be able to get rid of these. I clean everything. I vacuum, blow them off...

So this has been growing in my tank for about 4 months now, a deep green film, especially in areas of high light. It grows on the rocks, and the glass but never touches the sand. It also covers right over any corals on the rocks, it killed my bird's nest coral in a matter of weeks after getting...