Thanks Craig. I would prefer to go with a Maxima. However, it's my first one and Ive been told the Derasa is the beginner clam. Waddya think?I got my 4" Derasa from Aquarium Center last year for $40 and I believe they regularly have them. I've got it on the sand next to my Blue Maxima in my 90 under the 250 Watt MH's. It's already grown an inch or two. They also tend to have Maxima clams too, but they're usually smaller and cost more. But, I'd call first to make sure they got some.