Hello,
I am brainstorming my water storage setup, and have been having trouble figuring out how to fill my "salt" side without having it backup into my "fresh" side. Seeing all your photos, I'm highly confused by all the plumbing. I have 2 food-grade plastic 55 gal drums. I will be putting in a float valve in the "fresh" one. My plan was to simply connect the 2 tanks with a hose and let gravity fill the "salt" side. In my head, it seems like all I would need is a ball valve to stop the "salt" side from filling when I do water changes. But, the backflow is still a consideration at the refilling stage. That brought me to the idea of a check valve. It would require both.
I'm wondering what you all think of this.
Also, I'm wondering how to keep a bunch of algae from growing in the fresh side as it sits full for days/weeks? Do you guys keep a bunch of freshwater snails in there? Maybe a pleco