Trigunblood… Welcome to the forum. I would love to be able to say my design was all my idea, but it would be doing others, much smarter than me, a great injustice to do so. This is a culmination of my mixing station research. I will try to explain as best I can how it works, which I will apologize in advance, it’s going to be long winded! As to a parts list, I already had all the plumbing parts (with the exception of the ball valves) lying around from my original build. But here is the plumbing list as best I remember, all done with 1” PVC:
4-90 degree elbows; 4-“T’s”; 4-unions; 6-ball valves; various adapters for containers and pump; 3-pvc to hose adapters; and 2-uniseals.
The containers came from
www.tankdepot.com. Mixing containers (part # A-SP0055-MM) are 55 gallons. The small container is to make adding salt easier (part# A-SP0004-SQ5). All containers came with bulkhead fittings, so I just adapted to appropriate plumbing. Drilled hole in top of stand, and I just remove lid from left container, push fit a small piece of PVC to bottom of small one, and dump salt in, which directly feeds in to mixing container below. The stand is as simple as you see in the picture (post #1008 of this thread). 2x4 legs with a piece of plywood on top. FYI…the plywood top is secured with a dowels, not screws, so it can be removed easily if need be. The pump was an extra Little Giant 4MD I already had; I believe it’s around 1350 gph.
How it works: The right container is RODI with an auto shut off to the RODI unit, so it’s always full. The left is mixed saltwater. What you can’t see is I used another piece of straight PVC inside the left container that has the Pinpoint Salinity monitor probe, the temperature probe and heater attached. I did it this way so everything can be pulled out of the container easily. There is also a powerhead at the bottom to aid with settlement. It’s on a timer and runs for a few minutes several times a day. The power strip is a switched strip, so each outlet is individually controlled. As an example, I don’t keep the heater on, so I just turn it on before changes.
With the manipulation of various valves, all using the same pump, I can fill the left side with RODI water for mixing, I can recirculate and mix the salt in the left container, I can empty either container with the bottom two outlets (or gravity feed to empty if a power loss), and finally I can pump either clean RODI water to my reservoir under the tank or pump mixed saltwater to the tank for water changes using the horizontal valve you see in the picture, that has a garden hose adapter attached. I simply keep the garden hose on there at this point (not in picture). I was unable to run lines directly to the tank (I’m in Florida on a slab and I didn’t really have attic access where the display is located) so I’m stuck with stretching the hose through the house a couple times a week. At least it keeps my wife on her toes!
I’m sure there are better ways to do this. I know there are cheaper ways as the containers are a little pricey. But I love how clean it looks (it’s in our laundry/mud room) and it is working out very well for me. So as promised, this was a long-winded explanation and I’m happy to answer further questions, if any. Good luck and again welcome to RC.