Help Please! Slowly STNing and some RTNing

[-Logzor]

I think the issue could possibly be your magnesium level. I didn't see your test results.

If your magnesium is too low then your calcium can't fully saturate the water. So while it measure 420, your corals may not be able to use it. If that makes sense.

What is your coraline algae growth like?

 

[psionicdragon]

Do you have any LPS? If so whats there condition?

The LPS and Softies are doing great. No issues with them and chalice is growing pretty well.

 

[psionicdragon]

Mag is around 1400 - 1450 based off of Red Sea Pro test.

Coraline is starting to take off in one section of the tank, but not on the rocks etc.

I think the issue could possibly be your magnesium level. I didn't see your test results.

If your magnesium is too low then your calcium can't fully saturate the water. So while it measure 420, your corals may not be able to use it. If that makes sense.

What is your coraline algae growth like?

 

[psionicdragon]

Is it normal that Alk is dropping around 1 dkh a day? I mean the corals aren't growing and bunch has STN/RTN.

 

[psionicdragon]

Alk is too high as mentioned already the spike did not help one bit 7-8 is where I like mine.

I had my alk at 8 originally and was slowly raising it up to 10 because of what other reefers had advised. They mention that the test kits has a margin of error (which I didn't factor in) where the results could be +/- from the actual results. So they suggest raising it since if it was a neg, my alk would've actually been 6 or 7.

 

[-Logzor]

SPS tyically don't RTN until Alk hits about 6 or below.

 

[psionicdragon]

SPS tyically don't RTN until Alk hits about 6 or below.

Ah I didn't know that. I always read that it was caused by instability in the tank etc. But just found out that RTN is caused by bacteria.