a new idea for clown breeding!

[Luis A M]

<a href=showthread.php?s=&postid=7096645#post7096645 target=_blank>Originally posted</a> by Kathy55g
You may want your water inlets to go over the top of the tanks, rather than cut more holes and buy more bulkhead fittings--save money there as well.

I agree.
There's no need for valves in the overflow lines.
Another useful trick is to make the intertank walls slightly shorter than the external walls,so if an overflow clogs,water flows to neighboring tanks,not to the floor.
Still looks like an old plain central system to me