Clam not open

[Osama]

I have three clams in my 180g reef aquarium. hard & soft corals fish etc are all doing fine but one of my three clams is only partially open. Any ideas about possible causes & whar I should try are appreciated. all three clams are located close to the top on the tank in very close proximity to each other. meaning lighting & water circulation should not be the factor
Thanks for any suggestions

 

[Green Mariner]

Can you give us a little more info? Things like water parameters, type, and wattage of lighting, type of clams, age of bulbs, etc....
thanks!

 

[Osama]

My water is at 80F, Alk @ 6dkh (low) calc@ 380 (low)Mg @ 1200. I have my calcium reactor going, dosing Kalkwasser and started dosing B-ionic.
light 3X 175 10000k, 3X 250 10000k and 4 actinic 96w each . Plenty of lights. one bulb is replaced every 6-8 weeks so there is never a bulb older than a year.
I am trying to relocate the one clam in different location to see if different water flow &/or lighting will help. All other hard , soft corals & clams are doing fine .... Any other thoughts are welcome.

 

[JD]

Check for Pyramid snails around the new growth area of the shell, they look like small grains of rice and can kill a clam fast if not monitored and removed, also check for parastic shell boring worms, inspect the shell closely for small holes..... hth,,,,, ps.,,, get the calcium up....

 

[Anonymous]

hi.
What type of clam? Some clam like T. deresa may not like too much light... etc.

 

[toptank]

Steven, T. Derasa like intense lighting.

The Squamosa is the one that would require less lighting than the others.

Barry

 

[Osama]

The clam is a maxima. For three days now I moved it even higher almost close to the surface of the tank. More water flow & closer to the lights. It has opened up partially and seems better in that locaion. I will monitor it for this week and see.
My calc & alk are on the way up I am dosing BIonic, Kalk & my calcium reator.
THANKS very much for the input

 

[pathos]

Maximas like to attach their Byssal gland (foot) to a rock. Was his foot recently dislocated from a rock by any chance?

 

[Osama]

Hi Pathos; the clam is attached very well to his base rock for almost a year now.
It seems to like it where it is now with more water flow & it probably is getting more light. I will watch it for few days & see. I will post how it continues to do. It is a beutiful clam I had all three clams in my tank for 18 months all were next to each other at the same lvel in the tank.