Our ceramic clam holders are made of inert ceramic that unlike cement doesn't need curing. They are fired at over 2000 degrees for several hours. This prevents any ph spikes that are common from aragonite frag stations that are usually never fully cured leading to major die off in your tank. They have shown to promote coralline algae growth and corals.

These are solid for extra weight in high flow tanks, with a wider body for a sm/med clam. Will work for T. Derasa, T. Gigas, T. Squamosa, T. Maxima, and T. Crocea clams.

These are very realistic looking with natural curves and micro holes all over. These allow for the promotion of coralline algae growth and beneficial bacteria thats found on live rock.

The measurements are approx. 3"W x 4"L x 1"T. Due to these are handmade each one will be different. The measurements are general to what you will receive.