Been fighting a bit of a GHA problem in my 180. (brief history) I've been doing bi-weekly 25% PWC
's for awhile now, am barely feeding, and am not overstocked in any way, am using RO
, which is fed from a charcoal-filtered house-wide filter (usually 0 or 1 ppm
solids reading on my digital solids tester), am using IO Reef Crystals. No fuge.
Two weeks ago I spent one entire day scrubbing every rock clean. The tank is too deep to siphon and scrub at the same time, so I run both sump return pumps to increase flow through the sump socks, and netted out any filaments. After I was done I blew detrius off the rocks, repeatedly, then swapped out sump socks (which were green as could be). Found no filaments after that. I have about a half dozen astrea's, and a few hermits (my triggers seem to have eaten most of them).
I'm starting to see tufts of GHA again, on about a dozen rocks. Nothing long, just little tufts of it, starting to carpet its way across a few areas.
I've been trying to measure PO4
with an AP test kit - not able to get good results. There are two colorimetric cards, one for FW
, one for SW
The color matches against the lowest FW
reading - but isn't anything close to a color on the SW
Anyone else run into this prloblem with PO4
tests? There aren't any available locally, so I'd have to order a new one if this one is bad.