Crocea mantle ?

coraladdict

New member
I just got two clams today, one 3.5"crocea and a 4.5"maxima.My maxima extended it's mantle very nicely.My crocea's mantle isn't extended normaly,There is some extention somewhere arround half the extention you would see on a normal maxima and at one end, the mantle is just barely overlapping the lip .Is this normal and part of it's adaptation or what?
Lighting Tek 8 bulb , the clams are sitting about 10 " below the lighting.
My water parameters: sg 1,024
pH 8,2
po4 0
nitrate undetectable
ca 425
alk 9dkh
temp 80

Thank you
 
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