I don't know what the supplier is saying or is he the retailer, (name ??) these clams ARE NOT collected in shallow water. I have been to Tahiti 3x and have seen these clams on my last visit and where they are collected. (from the collector I met, and if you are planning a trip to Tahiti, meet with them and check them out, they are more than happy to give you a tour) I have seen Maxima's at 30 feet when diving. The water out in the atolls is super clean.
LED vs MH lighting is a issue for each of us to make there own determination. I am happy with my LED's since I switched over. A 3:1 ratio is approx a 20K temp and my clams are happy. Most of the wholesalers and LFS have switched over to LED systems so there must be something about them that is good. Look in your local Fish Store and see some of the conditions of there tanks that they sell from. Tell tail signs of the health of the animals. They mix all sorts of corals and clams together in there tanks which is not the best thing to do.
I also had the opportunity to visit the clam farm in the Marshall Islands years ago and I will say it was disgusting. Now that ORA has purchased it I'm sure its 100% better.
There is all ways a reason why a clam or any live stock dies. Poor shipping or handling, collecting, reefer, not every collectors of these clams collect the same nor are there storage facilities the best. If you get a clam with a dirty shell un scrubbed then that tells a lot.
Poor water chemistry, heat or lack or the proper chemicals or nutrients are the reasons why these clams are dying.
You can have an outstanding reef tank and still not meet the needs of these clams, keeping them alive and healthy and growing.
But to each there own, doesn't mean I am right or I am wrong. Just my 2 cents.
Look at your system and see whats wrong and figure out why they die. These clams are at least 5-8 years old and strong.
If your reef tanks is geared towards certain types of coral that need higher temperatures or a different cycle of chemicals then maybe clams are not for you.
I truely believe that having a dosing pump in critical...
What works for one reefer may not work for another reefer....