Well speaking about the success of the breeding system, we have had intermitten power outages all day, this last one was about 1 1/2 hours...during such events the breeding chambers all become independent and hold water with no adverse effects on the larvae or broodstock (however, this is dependent on ambient temperature).
A few random thoughts...if I have to add a small pump in the water jacket between the inner/outer chambers of the breeding chamber.....what I might do is add a small 9-watt submersible UV I'll hold that thought. Also, the inner chamber design could also be incorporated right into the design of a sump or if there is already room in an existing sump an inner chamber could easily be added (whereby the sump itself would become the outer chamber of the breeding chamber). This would make a breeding set-up possible for any and every hobbyist around the globe to incorporate into their reef or salt water set-ups. How is that for a home aquaculture explosion....maybe even a movement of truly conscientious aquarists!
By doing incorporating an inner chamber to every sump....well, it would take no time and very little effort to toss in a few snails or what have you...makes a lot of sense to me.