Convinced of a link between GFO and Cyano (and not the good kind)

[gregzz4]

Originally Posted by Myka

Yes. I've had better results in the tank by using a lesser amount and changing more often....

Thanks Mindy ( I missed your post )

I've been using 225ml and changing it every 2 weeks
I'll try cutting it in half to start with and see what happens with my PO4 readings/algae issues

If all is good I'll keep cutting it back to a point where I know what amount to use every 2 weeks