Back after 11 years!

[on the spot]

I don't see why it wouldn't feed to the first floor.

The surest fail safe is a reservoir with an overflow drain.

I wouldn't run the RO/DI as a constant fill - TDS creep will chew up the resin. the good news is that low voltage solenoid valves are cheap. you could wire up a couple toggle switches upstairs to run the RO to waste to clear out the creep, flip the switch to DI to fill up the reservoir, and once that is full close a ball valve behind the float valve on the reservoir to shut off the RO.

I'd avoid directly plumbed to the tank.

 

[Arcar]

I don't see why it wouldn't feed to the first floor.

The surest fail safe is a reservoir with an overflow drain.

I wouldn't run the RO/DI as a constant fill - TDS creep will chew up the resin. the good news is that low voltage solenoid valves are cheap. you could wire up a couple toggle switches upstairs to run the RO to waste to clear out the creep, flip the switch to DI to fill up the reservoir, and once that is full close a ball valve behind the float valve on the reservoir to shut off the RO.

I'd avoid directly plumbed to the tank.

Ok,

How about this? Because I might want to does kalk so what if I put a 10g bucket under tank and just buy a top of system. I will have a 44g tub in the basement with fresh water in it and only mix salt during WC. I will use 1 bucket for both. I will turn on the pump wirelessly to fill fresh water to my auto top off bucket. I don't think left over salt in the tub downstairs will have an effect. This was I don't have to pore water in the bucket it will be plumed.

How's that if it makes sense lol

 

[Arcar]

I was setting up a gravity ato but I don’t have room to put the bucket above the sump.

 

[on the spot]

Ok,

How about this? Because I might want to does kalk so what if I put a 10g bucket under tank and just buy a top of system. I will turn on the pump wirelessly to fill fresh water to my auto top off bucket...

That's a good plan.

 

[Arcar]

That's a good plan.

Thanks,

I don't have the room for a fresh water and saltwater RO container. Do you think after mixing saltwater and emptying the container then refilling it with fresh water to use for ATO?it won't have enough salt left over to cause a fluctuation right? My pump will draw from the bottom.

 

[SAT]

For topoff, I find that using a constant-feed dosing pump from an RO/DI reservoir works better than one might expect. The flow needs to be adjusted seasonally, but I find that's not a problem. Every few weeks I have to refill the reservoir, but again I find that to be an easy task. This system had the advantage of simplicity: no sensors or valves that are likely to fail and I can ignore it for a few weeks without worry. My dosing pump has been running almost 15 years without fail.

 

[Arcar]

For topoff, I find that using a constant-feed dosing pump from an RO/DI reservoir works better than one might expect. The flow needs to be adjusted seasonally, but I find that's not a problem. Every few weeks I have to refill the reservoir, but again I find that to be an easy task. This system had the advantage of simplicity: no sensors or valves that are likely to fail and I can ignore it for a few weeks without worry. My dosing pump has been running almost 15 years without fail.

What pump are you using? How is this set up? Thanks!

 

[SAT]

What pump are you using? How is this set up? Thanks!

It's an old Spectrapure. It feeds directly from a Brute trashcan into my refugium. I fill the trashcan with RO/DI periodically, adding a cup of kalk. I used to worry about calibrating the pump and proactively replacing the tubing but over time found that a periodic inspection is all it really needs.