It could also be that the test kit is old. Double check it with an LFS said:+1
Cheers,
Are you shaking it between drops. Sent from my iPhone using Tapatalk said:LOL, I not even going to touch that one
There is no way it could be that high... everything would be dead by now. The test kit must be bad and or your doing the test wrong. Do water changes just in case but go get a new kit. said:Not entirely true. A long time ago, I had a tank with fish and a few LPS and I took a water sample to Bill at Neptune's Cove and my Alk was off the charts. He stopped testing at 25 dkh. My fish that were already in it were fine but if I tried to add any others they died.