The Planted Tank Forum - View Single Post - Good way to test for low PH
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post #10 of (permalink) Old 01-05-2013, 04:29 AM
Algae Grower
Join Date: Apr 2011
Location: Seattle, WA
Posts: 76
I also experience testing to the minimum on the liquid API. Bought one off of ebay for <$12 shipped. 3 tanks tested in the low to high 4's (several members here could not believe my fishes, shrimp survived - I did have some clown loaches dying). Was really surprised, but after several calibration with 4 & 7 buffer soln, was confident of the meter. Also, I had one tank that was reading around 6.6 on liquid and meter read 6.7.

I wanted to get my tanks back to around 6.2, so finally accomplished that with crushed corals. And meter still tested fine against the API liquid once I got back into the 6's.

It's not a high end pH meter, but it did the job. This meter was shipped from the US.
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