Ca dosing reducing available ca?

[Cryptocaryon]

Hi, I picked up some aquaforest salt (not the reef salt) my mistake. I've run tests on a mix to see how much lower the alk, ca, mag is than my usual reef salt mix. As expected numbers are lower, mg is okay at 1350, Kh is 7.7 and ca 390. I've added 0.5ml of salifurt coral calcium to the mix to see how much it brings it up but it has reduced to 380. What's going on ? I'm dripping it in slowly into a small vat with a power head running.

 

[piranhaman00]

10 ppm is probably a test kit error. What kit?

Use a small batch to test if you are not already. Then when you have the addition correct scale it up to the entire batch.