Chemistry Update
Nothing particularly notable, but I’m reporting it for completeness.
Nitrate 11 ppm (no change to ammonia dosing)
Salinity 34.6 ppt (sg = 1.0261) no change to AWC; made a new batch new salt water and added molybdste and nickel as I did last time)
Temp 78.5 deg F. Back to normal after the raising during the blizzard)
pH 8.1 at 12:40 pm
Alk 9.3 dKH. Rising a bit, but ok and hard corals and coralline are doing very well. Not going to reduce the AFR yet.
Phosphate 0.48 ppm. Continues to rise. I’m reluctant to use GFO or lanthanum, but I may get an external canister filter to better run GAC and do some mechanical particle removal.
I cleaned the skimmer neck. Photos below of the neck after a finger swipe, and a handful of the mud from it.
Made a new 1.5 L batch of AFR and 1.1 L of 0.1 N sulfuric acid for alk titrations from the 2.0 N acid I have on hand,