Auto Top Off via RO line?

[Black Phantom]

I've got the same thing as Mark. Just a float valve from my RO to my sump. Mines been running for over 5 years now with no problems.
Just make sure all your lines are secure and you should be ok
Oh ya, and I flush my membrane every week for about five minutes. Seems to work just fine

[Funkytone]

I think I'm going to go with just a bucket hooked up to a float valve to keep the costs down of changing membranes.

Are there any specific float valves that work better than others? also, Do you guys keep the bucket sitting higher than the sump so they're gravity fed?

Thanks

[surgeonfish]

I also think running the RO/DI too frequently is hard on the filters. I had to change my DI filter almost monthly! I now fill a 50 gal aquarium sitting above my sump weekly and use a Tunze Universal Osmolator Automatic Water Top-Off system. I know osmolator is $200, but one of my best purchases.

[Delphinus]

I just use a furnace humidifier float valve, costs around $10-12 at HomeDepot/Rona/etc. Just the black plastic one.

I keep my bucket on a stand that's just a tiny bit higher than the sump. Gravity does the rest.

[Treebeard]

Reviving an old thread....how do you plumb that set-up? Have any pictures?

Originally Posted by Delphinus

I just use a furnace humidifier float valve, costs around $10-12 at HomeDepot/Rona/etc. Just the black plastic one.

I keep my bucket on a stand that's just a tiny bit higher than the sump. Gravity does the rest.

[christyf5]

Here are some pics of mine, its pretty simple. I have the RO reservoir up on a small table so I can gravity feed the sump and not have to use a pump.



I just use a rubbermaid tub, it holds about 10-12 gallons and the john guest fitting is an inch or so above the bottom.



I just drilled a hole in the rubbermaid with a drill. I made the hole a bit smaller than the JG fitting so it would be a nice snug fit and then siliconed around it:



A friend built a bracket for me so that I wouldn't have to drill the sump and it works nicely.





I have the level set up so that if the power goes out and the tank empties somewhat and the skimmer as well, the sump won't overflow.

Hope that helps

[Doo]

That would be great to see!

[mark]

humidifier float valve in sump for ATO

[Treebeard]

Thanks for the pics! I picked up a float valve like Mark's at Home Depot today, but I was not sure how to put everything together until Christy posted her setup.