Hi wamas, I recently ordered an "ultra" maxima clam and a derasa clam w/ blue rim and got them today and have two problems with them. First, they sent me two extra maximas by accident so now I have 3 maximas around 1 inch and a derasa around 2 inches in my 75 gallon. I'm not sure if my system is able to support this many clams, if anyone has a better understanding of clams please let me know on this. Second, I noticed that the inhale siphon of the derasa wasn't connected (picture 1). Is this something critical/ worth bringing up to live aquaria or will it heal given time? Also do the other clams look all right? Two of them retracted when I turned down the blue, but hopefully you can see the mantle to check if it's bleached or damaged in any way. It doesn't to me, but I'm a rookie so I wanted to ask for some advice. Thank you in advanced.
Tank is about 6 months old, 450 ppm calc, 9.8 alk, 2 nitrate, 0.3 phosphate