4 pH testers - all return different values!
This is absolutely as frustrating as it gets. I have recently noticed my plants doing worse and couldnt figure out why. I always have a pinpoint pH reader on my planted tank and the pH seemed accurate for the amount of KH and co2 I was supposively pumping in.
I had just ordered a new pinpoint for another tank and decided to see how accruate the 2 were (see if they got the same reading). And... nope. One said 6.9 and the other said 6.5. I then got out my liquid tester and it says ~7.2. I then got out my Milwaukee pH53 tester and said 7.1. I dont trust the pH53 one though because I cant get it to calibrate properly.
I had recalibrated both pinpoints that day. in fact, I even recalibrated them a 2nd time that day to make sure I didnt screw something up.
I am clueless... but if my liquid tester is accruate, then I am pumping way too little co2 into the tank. any thoughts?
Edit>>> I also had a Discus die the other day... can only figure it is due to some wild pH swings.. my power went out for 7 hours the other day so my co2 tank stopped pumping into the water... the co2 was also much slower after that, so I had to reset it (this was over a week ago though).
450g Planted Discus Tank - Work in Process!