Ora clam problems

[Thizz]

I bought 2 Ora ultra maxima clams 2 days ago and they seem to have lost a lot of mantle extension.
I'd say they are 1.5-2"

All my levels are fine and I acclimated for 1.5 hours.
Could this be because of stress,LFS owner had them in his tank 2 hours after the shipment arrived.
I have 2 Maximas and 1 crocea that have been with me
For 2 years no problems...I'm hoping this is just stress.
Oh and If it makes a difference,I fed some phyto to the clams today

First pic is at the store
I got the first one on the second row and the one before last on the first row.

And here they are when I was acclimating them.

And this is what they've been like most of today

 

[Thizz]

Ammonia 0
Nitrate 0
Nitrite 0
Dkh 9
Calcium 440

I use the salifert and Hanna checkers.

Lighting is 6x24w ati sunpower

Before my tank the clams were under 400w ushio 20k for 2 hours.and prior to that under whatever ora uses.

 

[Loki]

I'm no expert in clams. I have noticed that I have to "burp" my clams when I put them into the tank. There may be air trapped inside the clam and I rock it back and fourth to release the air.

One time I didn't get all of the air out and the clam didn't fully open until I burped it again. It also may need time to get used to the lights.

 

[skinz78]

What fish and inverts do you have?

It seems that they may be up fairly high in your tank, did you light acclimate them?

 

[Thizz]

They are in my frag tank,I only have a six line wrasse in there.

No I didn't light acclimate because they looked better unde the mh
So i figured it was not necessary.

Is this just from stress?

 

[skinz78]

You'll need to shade them, even if they look better they need light acclimated.

 

[rayviv]

Hello, I must have one of the same clutch, (or whatever you call it) Blue max ORA about 1.5, and it seems not to open as wide as the other two that I have. I dont think it is my lights or any of the fish and water chem is proper; so I'm just giving it time. I am ready to move it some to less current and light just to see if that makes a difference. I have had this about a week.

Ray