Ok you mentioned HOB filters. Now maybe someone can correct me but if you went with a canister filter cant you add a buffer to one of the layers to help LOWER your pH?
What are you putting in there anyway?
Ok you mentioned HOB filters. Now maybe someone can correct me but if you went with a canister filter cant you add a buffer to one of the layers to help LOWER your pH?
wish me luck. im really hoping there isnt something else going on here other than high ph.
1) PH in the 9s will kill the fish.
2) You PH in the 20gal is low because all the fish are crowded and CO2 and waste from fish will lower PH.
3) I would try adding something like vinager or something to lower the PH in the tank and "Leach" out all the high PH stuff. Then do a masssive water change, and retest.
Have you rinsed this many times? I think the more you rinse, the better your results will be...and maybe try salt for curing more rapidly.