That's great you're going to try it, clams I would have gone with as assistance to filtration and of course that means exporting organic nutrients. The number one reason I went with Pacific oysters is they filter more water per day than any other mollusk. Trying to fine-tune it since 2017 at this time with oysters I usually go with one oyster for every three gallons of water( for nps system, SPS alot less). Also oysters produce pseudo feces which will feed the corals and when they spawn they will also feed corals. Some reasons why I went with oysters and these are the ones you can eat. But Pacific oysters can withstand water temperatures regularly up to 95° Fahrenheit. When you acclimate them in the first few weeks you will lose some oysters possibly. But just keep an eye on them. for the first few weeks I would put them in a plastic mesh bag like the video shows.