Very low pH and Alk

[ChrisfromBrick]

I use Hanna for alk. Salifert for pH and alk when my Hanna gives a weird reading. I test all params weekly and everything was normal. Also not a new batch of sand. I’m halfway through a 22KG bucket.

try salifert for alk. I have the hanna one and i don’t like it. Salifert is awesome.

On the other hand and unrelated, i love hanna for my NO3 and PO4.

 

[ChrisfromBrick]

Yea I’ve read about that ratio. If my Alk keeps dropping I will get some all for reef. If it stops dropping I just raise the alkalinity. I honestly only test for mag and cal after big changes or something looks off.

alk is by far and away more important to test for than mag/ca.