AnotherReefHobbyist
Well-Known Member
I posted a bit ago about having a problem with an Apex PH probe, turns out it was just me being stupid and not knowing that there was a cap on the probe. I have now removed the cap, bought new calibration solution, and re calibrated. My readings are still a bit strange ( 7.63 ), but when I cross check with the solutions, they are bang on. I also used the probe in a cup with a sample of tank water to make sure stray voltage was not a factor, the probe actually read a bit lower, but not a significant amount.
My only other way of testing PH is an api master test kit, which is well known to be innacurate. This test kit shows 8.0.
I have also got my water tested at the lfs ( they are using api aquaspin ) and they also gave me 8.0, though this was two months ago with a different salt, so I don't know if this is even a relevant data point.
I will be doing a water change with fritz blue box today, so I will see if that raises the PH, and if so, by what amount.
What do you guys think? I am inclined to trust the Apex ph probe, simply because the cross checking was so accurate, but at the same time I dont know how any of my corals or other animals are surviving.
My only other way of testing PH is an api master test kit, which is well known to be innacurate. This test kit shows 8.0.
I have also got my water tested at the lfs ( they are using api aquaspin ) and they also gave me 8.0, though this was two months ago with a different salt, so I don't know if this is even a relevant data point.
I will be doing a water change with fritz blue box today, so I will see if that raises the PH, and if so, by what amount.
What do you guys think? I am inclined to trust the Apex ph probe, simply because the cross checking was so accurate, but at the same time I dont know how any of my corals or other animals are surviving.
