Corals closing up on me.........

the past couple weeks, my corals have been doing well. Up until yesterday or the day before.

They are all starting to slowly close up and not look so healthy.

My starburst polyp isnt open like a flower anymore. They were starting new stars and those are now gone. They look rather limp. He is located at the bottom of the tank.

My Zoa is not fully open now. Till yesterday, they were wide open and looked pretty darn close to a disk. Open, taking everything in....nice pink rings. Now, not so much. They are curling at the ends and looking fat and plump. Not healthy. These guys are located in the middle of the tank. I recently glued them to my rock structure cause they were doing so well. figured they were happy and found their home.

My orange colored coral is open but agin, not completely. They stopped producing new heads. We were up to 9 in a week or close to two from the original 7 heads it had. THose stopped growing too. located close to the bottom

My leather coral is still nice and open, but the colors are not much to look at. It was a greenish color, now its greenish white. it's close to the bottom

None of the corals have been moved or messed with. I havent done anything different.

Carbon runs 24/7

Lately I have been smelling the ocean throughout the house. The skimmer cup hasn't been filling up but it has had stuff inside it. I have been emptying that every day or two, just to keep it clean. It didn't smell nasty, but I did smell the tank. Primarily the sump.

The ph is around 8.1, but that was the level about 2-3 weeks ago.

the alkalinity was around 8.5 last night

I was doing 50g water changes every couple days but have resorted to one of those per week.

(reminder: this tank has been running with fish since December 20th 2015. Just finished the diatom breakout. Very minimal of that left.)

no chemical filtrants are being used either.

I have an acan (spelling?) that I just picked up from a LFS, and I"m afraid to place it in the tank now. It's either gonna die in the container or in the tank, right?

Parameters:
nitrate: 20
nitrite: 0
ammonia: 0
temps: 78
salinity: 1.025

any ideas whats happening?

Here is a photo of them
http://s804.photobucket.com/user/crankbait09/slideshow/fish tank/Coral
 
Last edited:
I just did a complete set of testing, here are the results:

Ammonia: 0
Nitrite: 0
Nitrate: creeping closer to 30
Phosphate: 0
Calcium: 410
Alkalinity: 8.3
Magnesium: 1320
Salinity: 1.025
ph: 8.1
Temperature: 78.9
 
Your parameters look good, accept for the 30 nitrates but that will not effect your corals that badly. Besides your next WC will fix that. How much do you feed your fish? If it's a lot then cut down on feedings to reduce nitrates. Now tell me about your lights. What kind are they and how old are the bulbs? If LED's then bulbs aren't an issue. But if T5's then you need to change them every 9-10 months at most once a year.
 
My lights are (3) Hydra 26 HD's.

I have since lowered the intensity on them. I will see if that helps. It has only been one day since the change, but I will monitor it. I have also decreased the number of hours they are on, from 12 hours, to 6. See if that helps as well.

I noticed the corals did open some after this change, but closed back up........we'll see if this changes in the next day or so.
 
You can leave the blues on for 12 hours but not the whites. I'm having to acclimate my tank to my new lights and I run the blues at 50% for 12 hours and the whites at 30% for 5.
 
4 days after the modifications to the lights, here is an update.

Since I have decreased the duration that the lights are on, as well as the intensities....all corals have opened back up. I did re-position a couple of them, and that, along with the time/light did the trick. They are even growing new heads in that short time.

wahooooooooooo
 
You can leave the blues on for 12 hours but not the whites. I'm having to acclimate my tank to my new lights and I run the blues at 50% for 12 hours and the whites at 30% for 5.

I have Kessils and just this weekend I ramped up the whites a bit and my frogspawn started opening up more but at the same time it started to release a brown string like substance. It's been doing it occasionally since the they I did it (3 days now) I brought the whites back down again. My intensity hasn't changed from 5% though. I believe it maybe zooxanthallae? I read that it can be that it's acclimating to the lighting? Have you ever experienced this?
 
Haven't been able to catch them in the act but from what I've heard I also believe it's zoo. Should I be worried?? Colors are good and they've been opening up nicely as well.
 
All of their colors look good. The two that I saw doing this have very nice fluorescents colors. I wish I could post pics but it's saying upload error for some reason.
 
Ok
Fixed it
See?
The frogspawn looks good
 

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