Well, I think this is what I'll end up doing. Ill use 5 gallons, and hook em all together. Im thinking perhaps just 6 or 9 will be plenty for me to handle in my tiny house on wheels.
I could put a bigger setup in an out building, but then i cant sit and watch them. And I'd need to buy a few more cisterns for water supply.
So, i will kis.
Thanks for any info. Im mostly curious about the best filtering and pumps for these. I understand the routing of the hose, although what i saw on utube, seemed to use very large tubing.

, I suppose for max of 9 fish, it wont take that much really.