My alkalinity continues to come down. Its about 10.2 now which is a big improvement. I will probably open the canister on Wednesday to see what the poly-filter looks like. Hopefully it didn't have to pull anything funky out (like heavy metals) but just PO4 and nutrient stuff. If thats the case then I will switch back to the nanostream 6045 so I can ripple the surface of the water a little more.
I am starting to see signs in Perky, the old Percula clownfish that make me think he's feeling his age which is around 15 -17 yrs old. I've had him almost 5 yrs and he was 10-12 yrs when he was given to me. He seems to at times have swim bladder issues where he is stuck near the surface of the water. Its not all the time however. Also this morning he was scratching on the sand so he may not have an adequate slime coating to fight off ich. None of the other fish are manifesting any symptoms so I don't think ich is in any higher concentrations than usual, I just think that Perky does not have the immune capacity that he used to, to fight it off. He looks fine now, has good color and no ragged fins or scales that look odd and he is still eating well. So nothing bad is probably imminent but it appears that a decline has started.