Somebody help me!

[jmp21677]

I can't keep sps alive! No idea why. No issues with lps or zoas. Coraline algae growing, clams doing well. Everything seems good except sps.

Water parameters
Salinity .026ish
Alk 9.2
Calcium 435
Phosphate .03 during last ICP test 2 weeks ago

Radion G4 pro set at 40% ab+
4 T5 bulbs. 3 blue plus 1 purple pluS
set about 10" above the tank

3 mp10qd
Nyos skimmer
Chemi pure blue bag in media cup

Just started dosing other methods to help stabalize alk.

I'm at a loss. I don't know what to check next or change. ICP test came back with adding iodine.

Anyone have suggestions?

 

[Doctorgori]

Flow? Nitrates? Tank “too clean”? AEFW? Pest? ...I dunno, making sure your post does not go unanswered LOL (not so inside joke)

 

[Camaro Show Corals]

Tank pics and Is it Stn or Rtn?

 

[Dave Cureton]

How long has the system been running? What size is the tank? Can you post your ICP results?

 

[jmp21677]

I'm losing them so fast that I don't think it's too clean. I haven't seen any pests as of yet

 

[jmp21677]

Tank pics and Is it Stn or Rtn?

Coral just stops extending polyps and then just fades away.

 

[jmp21677]

How long has the system been running? What size is the tank? Can you post your ICP results?

Should have posted this to begin with!

Tank is a waterbox cube. In the 50 gallon range
Tank has been up and running about 14 months

 

[Camaro Show Corals]

Is it from the base or tips? Any dosing of 2 part or how are you keeping up with demand?

 

[jmp21677]

Here is my most recent ICP test

 

[jmp21677]

Is it from the base or tips? Any dosing of 2 part or how are you keeping up with demand?

Dosing Triton other methods
From the tips usually. Haven't noticed anything from the base recently.

 

[ou12004]

It could be parameter swings, a friend of mine was adding buffer to get his alk up was killing sps but his LPS and zoos were fine. Once he switched to a kalk drip his sps started doing great

 

[Dave Cureton]

PSU/SG is a bit low per ICP. Alk is a bit high for my liking based on low nutrients. Have you tried any starter sps like monti or birdsnest?

 

[Camaro Show Corals]

Dosing Triton other methods
From the tips usually. Haven't noticed anything from the base recently.

by hand or a dosing pump? Tips normally mean alk to high and/or too little nutrients hence burnt tips.

 

[jmp21677]

Here is a good example of whats happening!

 

[jmp21677]

by hand or a dosing pump? Tips normally mean alk to high and/or too little nutrients hence burnt tips.

Dosing pump. Dosing 1 hour apart

 

[Camaro Show Corals]

Here is a good example of whats happening!

Can you test nutrients?

 

[jmp21677]

PSU/SG is a bit low per ICP. Alk is a bit high for my liking based on low nutrients. Have you tried any starter sps like monti or birdsnest?

What do you suggest on Alk? Always my biggest problem. My tanks always seem to run low (below 8) if I'm not dosing.

 

[jmp21677]

Can you test nutrients?

I have phos and nitrate tests on hand. Most recent ICP test is also posted above.

 

[jmp21677]

Thinking maybe pull the chemipure blue?

Really appreciate everyone's response here

 

[Dave Cureton]

8 dkh seems to be considered a good base line. The ICP test you did looks like it has recommended values on the right hand side. I keep my tank as close as I can to 7.5 dkh.