Zoas reaching and not opening.

[3s1k]

I bought some Rastas at the end of January that still haven't fully opened up. I dipped them and moved them around and only seen them partially open. I have noticed that they look like they're reaching up and look very long. I had them directly under my Kessil A360we on the sandbed and they were stretching straight up.

 

As a test, I stuck then on the side of a rock just off to the right side or my Kessil, but higher up in the tank. Since they are on their side they look like they're still reaching up but bend themselves almost 90deg.

 

They are just under the Hammer coral on the right side. There's also a zoomed in screen shot.

 

I have my kessil going from 40% intensity up to 75%. From 11am to 9pm. From 4pm-7pm its between 60%-75%.

 

I have a Nuvo Lagoon 25 which is 12" high and the kessil is 7" off the water. 

[Repower]

What are your parameters?  How did they look prior to purchase and what environment were they in?  I’ve never had luck with Zoas when I had shrimps, perhaps yours is picking on it?

[blasterman]

Uh, the hammer isn't happy either. That would be my first concern.

 

Try lowering the light level on the A360

[3s1k]

I cant seem to make either happy. I had both in the sand bed and used the acclamation setting on the Kessil controller to go from 30% to 75% over 2 weeks. Neither would full open up.

[3s1k]

Any thoughts on both the zoas and the hammer? I just started using RODI water, do these corals like dirtier water?

[MrObscura]

Imo all corals appreciate  "dirtier" water. My tank is much happier after having to dirty it up to combat dinos. 

 

If your no3/po4 levels are 0 then that could be part of it. But what are your other parameters? 

 

There's also the fact that you say you just started using rodi, what were you using before? Tap? That's a likely culprit.