I have some of that stuff and never used it. Of course I didnt know it could have been cyno either. Ive collected an entire pharmacy for saltwater over the years, but still found that water changes have cured most of my problems. My tank is tiny so a 25% or larger are no big deal. It seems that if I let my weekly 7 gallon 10% water change go for about three weeks I develope a small problem.Vandur said:Don / Eliyah,
If you want to just wipe the stuff out with a temporary fix (you will still need to find what is causing the increased phosphates), try using Chemi-Clean.
Just my $.02.