I'd like to thank Sarotherodon and NetMax for their quick and encouraging
response.

As far as them getting caught up in the gravel, I thought of putting a
double layer of plastic screening under the pot. This should allow the UGF
to do its job yet protect the fry until they are free swimming. Sound
reasonable?

I'm actually leaning to an experience issue.

Thanks again. Any more thoughts are appreciated.

Steve