Losing my zoas colony.

[RicoJ]

I think when I switched from 2 part to alk my zoas didn't like it and now I am losing my zoas. Should I go back to two part?

Here are pictures of what they looked like before and after.

 

[650-IS350]

what are your current parameters

 

[Tweaked]

explain switched from two part to alk. That doesn't make sense to me. Are you just dosing alk now and not ca?

 

[Coralreefer1]

You can't just dose one and not the other, since one affects the other, where on is depleted when the other is increased without dosing both simultaneously.

 

[RicoJ]

guys kalkwasser replaces both alk and ca. It is like a two part in one.

 

[Flippers4pups]

Water quality, flow, pests and lights come to mind. What is your water prams?

 

[Tweaked]

guys kalkwasser replaces both alk and ca. It is like a two part in one.

You didn't say that in OP. So we were confused. The Kalk can raise PH a bit too.