If you have just one powerhead, I would add a bigger one or have more than one. I was using 3 maxijet 1200 in my 75 plus the mag 7 return pump from my sump. You still have a source for the PO4
though. I got rid of mine when I redid my aquascaping and changed out my DI
filter on my RO
unit. I kept getting a PO4
reading from my RO
I figure it had to be the DI
filter so if you RO
water tests ok then this might be tough. I added 3 fighting conchs which are supposed to eat slime algae too.
Just keep at it. I thought mine would never go away but it did
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,