purple up enough for calcium?

[Oscar]

Originally Posted by Myka

Is that all you test for? You don't test pH, Ammonia, Nitrite, Nitrate, Phosphate, Alkalinity, etc?

Your magnesium should be around 1350. Think of Mg as the fulcrum on a teeter totter. You can't keep alkalinity and calcium up if your magnesium is very low. In your case, it is very low. Try to aim for Calcium 400-430, Alk 8-10, Mg 1350-1400. pH should be 8.0-8.4, and Am, nitrite, nitrate, and phos all 0. Not close to zero, but AT zero.

I am testing for all of these too. As some others have reported there was a batch of Kent that had some weird parameters. Calcium is continuously high, while Mg is low. So I have recently been dosing to get the Mg up.

My Alk has been too low. So before dosing for alk I think I am going to hold off on the purple for a few weeks to see what happens.