Sudden Alkalinity Drop

[BlueTang<3]

i suspect test kit as well i had a api and my alk reading was around 9-10 and with elos was at 4-5 was having big ph swings but never thought that much of a difference was possible

[KennyKen]

So after 4 more go's, i got a 3, 5, 6 and 7 reading.
This is an API test kit, any suggestions on a more accurate test kit. Elos?


so even if my alkalinity is some what normal.
What would cause my zoos to close up like this. I have them do this before, and it was indeed low dKh. Nitrates, ammonias and nitrites all 0

pH? i just ran out of that test kit

[KennyKen]

and to boot, i just came home to my flasher wrasse deceased.
This could be from this issue or something prior.
Bottom line, i would like to get to the bottom of it.

what is your PH at as low Ph is hard on those flashers and many other fish in general. It can also cause the Zoos to close up. I would get a new test kit and take a sample with pipit from the middle of the water column or center of tank water tends to be in motion there more consistently and you get a better reading. Its kind of like when you do a test on a pool you are suppose to take the sample from a bout 2-3 feet below the surface and around the middle of the pool to get the most accurate test results.

Bill