Tristan wrote:

I also have made a resolution to never ever buy anyhting but fish and
clean up crews that are capable of moiving aorund on its own.

I think the moto is "don't fight it". They seem to have a mind of their
own.

I've been trying to reward them with additional light when they stay in
the spot I'd like them to. But, they'll up and wonder for no good
reason, but I reduce the lighting until they return. Then I increase
lighting again. Don't know if it works, but it does seem to.

--Kurt