Long overdue pictures also help, please

[strauss]

Big thanks Enigma and fragit Dan. Also, Is it normal for corals to require much more alk than ca?

[Starry]

Corals need time to acclimate to your tank...flow, lighting, ect. 3 weeks might be too soon for some types of corals.

[Enigma]

Originally Posted by strauss

Big thanks Enigma and fragit Dan. Also, Is it normal for corals to require much more alk than ca?

I use Reef Crystals, and it mixes up low in Alk. You might like to check what your salt mixes up at.

Honestly, your test results don't really reflect Calgary tap water usage, IMO. When I used tap water, my Alk was 22 (I'm in Huntington Hills).

What test are you using for calcium? What does your new salt water test for calcium? I'm concerned that your test may be inaccurate, or that you may be testing it incorrectly (keep the bottle perfectly straight: perpendicular to the vial). Two of us (i was one of em) on the forum wound up tearing our hair out over calcium tests a little while back.

Even if your salt is mixing up high, I really don't think your calcium should be as high as it is with your 5-10 percent bi-weekly water changes: even using tap water.