Derasa attached to rocks

[Mekong]

I have been keeping a derasa and squamosa in my 55g fuge under 220 VHO (10,000k and 6,500k bulbs, no actinic/blue) They have been doing great, the derasa is 4" and has 1cm of growth since I got it and the squamosa has had about 1/2cm and is about 6". I feed them about 3-4ml of phytofeast over a week.

Recently my VHO decied that it only wanted to power one bulb at a time no matter what I tried. So I moved my clams to my display on the rocks so my sand sifitng goby wouldnt distrub them. The tank is lit by 4x65watt PC and 2x54watt T5, the tank is an 80g and the clams are about 9" underwater.

The derasa was a little bit to close to some zoos and almost looked as if it was gonna fall so I went to move it gentaly as I could and I noticed that it had attached its self to the rock in one day!!! Is this good? I assume it means that it is happy. I can move the frags to accomidate it. Should I just leave it and work around it?

The squamosa hasnt attaced, yet still extends fully.

 

[Freed]

Is obviously happy where it is. The zoas will not hurt it.

 

[Mekong]

It is right up against another rock, will the clam move as it grows? Cause right now the mantel is kinda of lifted up by the rock, will the clam adjust its self?

Ill take pics in a little bit. This derasa looked great under 10,000k and 6,500k even though the light was horribly yellow and now under all the T5s and PC actinics and broad spectrum it looks amazing.

 

[Mekong]

 

[mbbuna]

it will be fine if it starts to grow and it dosnt like being up against the rock any more it move it self

 

[Mekong]

So just leave it and not move it? For some odd reason this clam in particular is always inline with the florescent bulbs ever sine I bought it...