Thank you for your very kind words.Where is the Jaw-drop emoji!!! The layout is very nice, the center tank display, on a separate note, is breathtaking!!
So you have one return pump, I was thinking having one per system and did not think to plump and have one. I am assuming designing it was something else.
Using one return pump works just fine as long as you have all the head pressure calculations down. Designing it was less fun than you might think as I actually had the whole system completed and then @mcarroll pointed out that based on his calculations it would be unlikely that I would get the return rate I was looking for. He was correct and I ended up redoing a bunch of plumbing. Thus the measure of twice comment. That said it was rewarding and SEEMS to have greatly simplified the process. The tank is dead silent and I am very pleased. The key to making it happen was the manifold that services all the tanks. Its not rocket science but it did take a little planning. Feel free to ask if you need any advice or help.
