I'm temporarily managing a LFS and about a month ago I made a mistake. One of the order sheets had fantastic prices on 2 to 3 inch clams so I brought a bunch in. When they arrived, I realized my mistake. The order sheet was in CENTIMETERS not INCHES. There were maybe two out of the bunch that are one inch....all of the rest are smaller. I put them in a 24gallon aquapod nano so they wouldn't get lost in all of the 700 gallon tanks. I fed them DT's once on the first day. Then a customer left the refridgerator door open and ruined our entire shipment of DT's phyto. We never put in a re-order for live phyto and not only are all of them alive, they are not gaping, and they are growing well. The only food inputs are food for the two damsels that share the tank with them. Many of them have even been sold to other aquapod owners (The ones with the retrofit MH's vs normal PC lighting). While I won't claim to be an expert on clams, these guys are putting down new shell and I'm doing nothing but turning on and off the lights daily and feeding two damsels daily.