Hard COral Diseases?

[fencer]

I can't believe the DkH is that low. I would find a LFS and get them to verify the carbonate hardness. Edmonton water is already hard( unless of course you are using RO/Di water) and plus fact that he is dosing with a calcium additive

[xtreme]

Originally Posted by Nexus13

i'm supposed to be in 105-125

is that accurate?

I would aim even higher than that. 140 ppm is roughly 8 dKH and that is where I like to be. 80 ppm is about 4.5 dKH which is way to low for SPS.

[xtreme]

Here is a conversion chart. I think most will agree you should be somewhere between 7 - 10 dKH.

http://www.saltwaterfish.com/vb/showthread.php?t=175205

[Navarchus]

Hi
Usually a change in alkalinity may cause that problem. What is your alk?
Another direction is a change in salinity or in temperature. In my experience some folks damage their system during water changes without proper equalization.

I have also noticed your ca is on the low side and you don’t have an ALK and MG test results. If you can provide dose it will help diagnosing you problem.

When you touch you sps corals do they brake easily?

[whatcaneyedo]

Originally Posted by Navarchus

Hi
Usually a change in alkalinity may cause that problem. What is your alk?
Another direction is a change in salinity or in temperature. In my experience some folks damage their system during water changes without proper equalization.

I have also noticed your ca is on the low side and you don’t have an ALK and MG test results. If you can provide dose it will help diagnosing you problem.

When you touch you sps corals do they brake easily?

Scroll up the page by 6 posts. His alkalinity is 2meq/L

[Navarchus]

Oops didn’t see that….
Any way that too low in my book I think that’s the problem.
Now the question why you have such a low (5.8dkh) alk?
How do you supplement your ca and carbonates?