Okay we have a big black sand sifting cucumber in the 210g. It cruises around and helps keep the sand clean. So, I bought a much smaller yellow sand sifting cucumber for the small 20g hex. It has been in there several months and helps keep the sand much cleaner.

Here is the odd behavior- it has taken to climbing up the glass. It was eating the algae from the glass and vortech.

So am I starving my small cucumber? Anyone else have any experience with them? It is not getting smaller or thinner, but I sometimes worry about these things.

Anyone have any ideas?