Coral growth issues...

[Scubapro13]

Just might throw this out there - where are you getting your water? Have you checked your RODI with a TDS?

Yea I have a in line tds meter showing 0 out of di

 

[markalot]

Yea I have a in line tds meter showing 0 out of di

I've always been told the inlines are not temperature correcting so it is a good idea to get a handheld, like the cheap TDS3 (search amazon) to do a double check on the output. The colder the water the lower TDS reads unless corrected.

Just a thought, doubt it's related to any of your issues.

 

[Icefire]

How many light do you have? By the picture I would say 2x 70w (140w)
You are running 4 hours at roughtly 60% (84watts) on a a 90 Gallons?

I have a 24" cube, 60 gallons and run 2x 120w at near 80% for 8h a day...

I would look to max the blue, adjust the white to your taste and push the lenght of time at a minimum

 

[Wiskey]

Can you get a closer picture of the corals? Like a Macro shot? Seeing them up close can really help narrow in on the issue.

Whiskey

 

[Scubapro13]

Can you get a closer picture of the corals? Like a Macro shot? Seeing them up close can really help narrow in on the issue.

Whiskey

 

[Scubapro13]

How many light do you have? By the picture I would say 2x 70w (140w)
You are running 4 hours at roughtly 60% (84watts) on a a 90 Gallons?

I have a 24" cube, 60 gallons and run 2x 120w at near 80% for 8h a day...

I would look to max the blue, adjust the white to your taste and push the lenght of time at a minimum

Alright I try and max out the blues and I'm going to leave whites at 50% and see what happens

 

[tmz]

Personally. I'd take another road reducing the gfo use an letting PO4 rise to around 0.02 to 0.05ppm . I'd also feed a little more to insure adeaure nitrogen, say abarely detectable reading on a nitrate test kit.

 

[Scubapro13]

Personally. I'd take another road reducing the gfo use an letting PO4 rise to around 0.02 to 0.05ppm . I'd also feed a little more to insure adeaure nitrogen, say abarely detectable reading on a nitrate test kit.

That's what I'm going to do obviously what I'm doing isn't working

 

[rehab]

To be honest, your sps looked like they were starved to death. A few factors on why I am saying this.

Your po4 and nitrates are both 0 in a closed system. This could contribute to your corals not getting enough nutrient.

No one has pointed this out but you are running an extremely oversized skimmer for your system. Your skimmer is what I run on my heavily stocked 280gallons system for 5+ years with sps growing every where and 20+ fishes. On a system your side, that skimmer is taking out everything in the water including food for the corals.

Cut the gfo out like others have Already suggested and see how things go.

In my experience starving corals in ulns bleach out from base and eventually die. The bases on these corals don't get as much direct light this they rely more on direct feeding from the water column. Without both light and food source in the water column the bases are usually the first to bleach out and go.