Help needed - coral stress

[Jim Albert]

I have a 120 gal reef. Over the last few weeks I installed a automatic dosing system. I have been using the balling method for a few months prior but I was not always great about remembering to dose daily. Hence the reason for the automatic doser. I have had an issue now with my corals being stressed and not opening. Mainly the leathers and some of the frogspawn and elegance. My levels in the tank are as follows:

Salt - 1.025 (recently raised from 1.020)
KH - 8.5
pH - 8.2 (normally running around 8.0)
Calcium - 380 (recently raised from 300 and looking to get to 400)

I am going to let it ride and see if they acclimate. No other major changes recently with flow or new additions.

Any suggestions?

 

[alan.reef]

few factor, depend how fast you raise your parameter, coral placement, lighting, NO3, PO4 and your tank age.

 

[Jim Albert]

tank is 3+years old
I raised the salt pretty fast over 2 days the others were much slower
Placement has not been changed
I went to LED lighting a couple months ago. Everything was going well under the new lights
I have not checked PO4 or Nitrates. I would imagine that there is low PO4 because my macroalgae in the refugium is growing well

 

[Jim Albert]

nitrates 0
I will need to buy a PO4 kit.

 

[Randy Holmes-Farley Verified Community Expert]

The increases you made were good, but it may take time for the corals to recover. The values look fine now.