M. welcome to TR
Glad your setting up residence with us.
Wow, 2000 water bottles, thats i nice piece of hardware you have cooking.
Not totally sure on the twin overflow design, can you ask the builder more on its design functionality for me. im interested in learning any new developments in europe. I suspect its function is to make cleaning difficult & a quieter waterfall transition into the weir but im only speculating ...lol
The thing that concerns me is the "metal" component as the overflow strainer. Durable plastics are used for a reason in regards to salt. Leaching & conductivity can be a problem. i look forward to your progress, hell ,anyone that has enough cubes to actually go swimming with their livestock makes me take notice more anyways.
lol
