All clear as of last night! The socks did the job to remove all that GFO dust that got loose.
I'm anxious to get the fish and my replacement batch of CUC in the tank. After the 3 clogging episodes of GFO and the resulting dusting of GFO powder, the algae has gone nuts in the tank.
Once the fish and CUC are back in the tank, they'll mow it all down in a week easily. Until then, the urchins in the tank are doing the best they can to keep up.
On the frag tank, still battling phosphates but at least my alk is stable now. There's a constant up and down with the continued leaching from the rocks but I seem to have dialed in the right amount of GFO now to counter the leaching without stripping it too much. I went too heavy last week with GFO and caused a mass STN event. I lost some frags but most seem to be recovering now. The joys of a 2nd tank... [emoji53]