Food for a Cucumber?

[Tahoe Reefer]

Is there anything I can use to supplement a cucumbers diet?

 

[Reef Frog]

What species of cucumber? They feed from suspended matter in the water column: dissolved organics, phyto & zoo plankton (live, dried or preserved wet). For long term success, they need target feeding & often need very good flow to stimulate the extension of feeding tentacles. Be aware if the body size shrinks and/or feeding tentacles remain retracted...this means it isn't getting enough food & is on the way out.

Many will kill your fish when dying, injured or disturbed by you...especially in a small tank like yours. Forget what that the fish sellers web site says "mildly toxic" or "reef safe". I saw one like this removed very carefully that wiped out most of the tank's fish life in an instant. Not worth the risk IMO. Good luck.

 

[Tahoe Reefer]

Well this cucumber has been in my care for at least 3 years however, I recently downsized my tanks to a nano and haven't decided to keep it long term or not. It doesn't seem to feed from the water column but from the sand bed itself... Just puts along eating sand and depositing clean sand as it goes. I'm unsure of what species it is, not any of the ones i've seen through a google search.

 

[Sparkpaul]

My black cucumbers just eat sand and poop out sand. I have like 8 and they get so big. I didn't think I had to feed them anything other than left over fish pellets and algae.