Sand Dollar by Aqua Group
Sand dollars are delicate, sand-sifting echinoderms that require a well-established, mature reef tank with a deep (3+ inches) fine-grain sand bed to thrive. They are specialized feeders consuming detritus, algae, and bacteria from the sand. Key care includes avoiding new tanks, providing ample sand area, and maintaining stable reef parameters.
Key Care Requirements
| Substrate | A deep, very fine sand bed is mandatory. They do not do well in coarse sand or gravel. |
|---|---|
| Tank Age | Only add to tanks older than 6 months. They require a high volume of organic matter (detritus) in the sand to feed, which is only present in well-established systems. |
| Diet | They are detritivores, filtering organic particles from the sand. They rarely need supplemental feeding. |
FAQ
Can I add a sand dollar to a new or young reef tank?
No, sand dollars should only be added to tanks that are older than 6 months. They require a well-established system with sufficient organic matter in the sand to survive.
What type of sand should I use for a sand dollar?
A deep, very fine sand bed is required. Coarse sand or gravel is not suitable as it does not support their feeding behavior.
Do sand dollars need to be fed regularly?
No, sand dollars are detritivores and primarily feed on organic particles naturally present in the sand. Supplemental feeding is rarely necessary.
Andrea Underwood –
Added the sand dollar to my 12-month-old reef tank after ensuring the sand bed was deep and fine. It has been active for several weeks, constantly sifting through the sand. The tank looks cleaner now with less detritus buildup. No feeding needed, which is a relief.
Sue Davidson –
Only added after my tank had been running for over six months. The sand dollar is active and seems to be helping with cleaning the substrate. I didn’t feed it anything, and it’s doing fine.
Stephen Young –
After following the substrate and tank age guidelines, the sand dollar has become a regular part of the ecosystem. It’s quiet but effective at consuming detritus. Great for maintaining a balanced reef.