Magic Kiwi's Tank Journal Thread

[lastlight]

Can't comment too much on your readings but I will say that I previously always got zero readings in my reef using the phosphate checker. i'm happy getting actual values to work with with my ULR although the darn reagents are much less common.

[Magickiwi]

Originally Posted by lastlight

Can't comment too much on your readings but I will say that I previously always got zero readings in my reef using the phosphate checker. i'm happy getting actual values to work with with my ULR although the darn reagents are much less common.

If it works more reliably then I'm happy. Readings with the phosphate checkers don't seem very accurate/consistent.

[Reef Pilot]

I use the Hanna phosphate checker and found it to be very accurate and consistent. The trick is to be sure your vial is clean (no fingerprints or smudges) and mix the colour solution for close to the max time (3 mins). Also be sure to press and hold the Add C2 or you won't get the full 3 min countdown. If you just press and release, you will get a reading but it may not be accurate.

Like you, I found the other chemical tests reading zero while the Hanna read higher. But as my phosphates dropped further, the Hanna also consistently read zero. So I believe the Hanna.