weird blasto behaviour?

hi guys , i transferred my blastomussa to my new tank a week ago and it was always open and happy until today it didn't expand, which it is a first since the 3 months with me it is under 250w metal halides and placed in the middle, i know they dont like strong lights but the picture below shows the coral expanded and happy under same light and position, i'm confused

all other corals are great



you can see the coral on the left mountain from this pic, is the positioning okay?



my green precious not expanding =(

 

I wouldn't worry unless it has been weeks since it hasn't expanded. One day is nothing. Corals go through natural stages of polyp extension and retraction and it's just something to get used to. At any given time my bubble coral is as open as can be. But once in awhile for whatever reason it just....closes up. Same goes with pretty much all of my corals. It's just the way it is and you needn't worry.

 

it's so weird.. it's been 3 days already. my parameters are all good. i mean if it's the lighting.. then it would expand when the actinics are on and retract when MH's are on , so i guess it's not the position. what's the longest your corals went thru the retraction period?:-/

 

It was under the new lighting for a full week before this started?

 

hmm.. actually it was good for 3 days, after that i was away for 3 days but lights and everything was on timer, i came back ( the 6th day after lights came ) and it was in this condition. you think it's still acclimating?

anyway thanks soo much for replying, i really appreciate it, it's my mom's fav coral and she's very worried =)

 

Try moving it to the bottom of the tank and see what happens. Yes it's probably still acclimating. What kind of lighting was it under before it was put under the 250w halides?

 

it was under 4x 24w T5HO , 2 ati aquablues and 2 ati actinics. it was doing good at the top of the tank ..

but if it's the lighting, wouldn't it expand under actinics?

 

Not necessarily, no. Especially if it's had a chance to "learn" the light cycle. It "knows" the bright lights will be coming on so it just stays closed until it can acclimate.

Strange as that may sound, I know. But my corals seem to "know" my light cycle because a couple months ago when I turned off my lights for a few days, at first they started to act like normal until they "realized" the lights weren't coming on after all.

Move it to the bottom and see what happens in a couple days.

 

The briareum I got almost 3 weeks ago just started opening up about 1-1 1/2 weeks ago so it took about 1 1/2 to 2 weeks to open. I was just getting ready to toss it and cut my losses, LOL.

 

ah alright, it's a PITA to place my corals at the bottom as my tank is 30 inches deep, but i'll do that

shame, i liked the current position, it looks great there, thanks !