markalot
...
Thanks for the idea Max, I'll be looking into that if I can't get things under control.
Update ...
So Nitrates had sunk to 2 or a little lower and I backed off the output of my recirculating biopellet reactor. Nitrates did rise a little, but PO4 also rose to .12. :headwally: I guess the good news there is that these all-in-one pellets do seem to be putting a dent into the PO4.
I increased the output and am preparing to dose nitrate if I need to in order to keep it elevated, but my understanding is not to do this unless I can actually drive nitrates to 0. AN order of bulk GFO and a 2 liter jug of Phosguard arrive today and my plan is to suck the sump clean using my buckethead, then replace the GFO to tackle the PO4 problem again. I suspect it will exhaust in a few days.
My blue tenuis, a coral I've never been able to keep alive, is mostly dead now. Apparently it can't take any elevated phosphates, or it is sensitive to phosphate swings. My slimer is still green, but not bright impossible green. All other SPS look healthy, just lacking color.
Update ...
So Nitrates had sunk to 2 or a little lower and I backed off the output of my recirculating biopellet reactor. Nitrates did rise a little, but PO4 also rose to .12. :headwally: I guess the good news there is that these all-in-one pellets do seem to be putting a dent into the PO4.
I increased the output and am preparing to dose nitrate if I need to in order to keep it elevated, but my understanding is not to do this unless I can actually drive nitrates to 0. AN order of bulk GFO and a 2 liter jug of Phosguard arrive today and my plan is to suck the sump clean using my buckethead, then replace the GFO to tackle the PO4 problem again. I suspect it will exhaust in a few days.
My blue tenuis, a coral I've never been able to keep alive, is mostly dead now. Apparently it can't take any elevated phosphates, or it is sensitive to phosphate swings. My slimer is still green, but not bright impossible green. All other SPS look healthy, just lacking color.

