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Discussion Starter · #1 ·
I'm looking to invest in an ATO system for when I go out of town, but I have a couple questions...

I (obviously) am looking at the most bang for the $$$. So I'm open to ideas.

Also if it is topping off the tank and / or sump, then what is topping it off? (where's the source water from?)

Thanks!
 

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Chad

A typical system has a display tank[DT] with a sump under or lower than the DT. The drain from the DT to the sump will reach a low level if & when pumped water from the sump stops.
By the same means, a sump is filled to a level where if & when the pump inside it stops, the water coming back from the DT will not oveflow the sump.

So your water source in this case is the sump.

HTH
 

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These are good reasonably priced top-off kits - http://www.autotopoff.com/

I'm not sure exactly what your asking about the source water. Top off water will have to come from a separate freshwater holding container. If you have a sump evaporation will only lower the sump level water lever.
 

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Your RO/DI system will be plumbed to a storage container such as a Rubbermaid trashcan or an old aquarium. I like to keep mine covered so it stays clean.
My storage is a 23 gallon Rubbermaid can fed from my RO/DI and controlled with float switches and a solenoid valve.

I use a Spectrapure UPLC-II ATO system like on sale 8 items down in this flyer:
http://www.spectrapure.com/email/customer-appreciation.html

The RO/DI is controlled by a system similar to this:
http://www.spectrapure.com/St_alc_p6.htm

An inexpensive float valve works also but is not as reliable and can lead to TDS creep issues.
 

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These are good reasonably priced top-off kits - http://www.autotopoff.com/

I'm not sure exactly what your asking about the source water. Top off water will have to come from a separate freshwater holding container. If you have a sump evaporation will only lower the sump level water lever.
I can't say enough good things about autotopoff.com! I ordered the supplies for my ATO system from them and they were great! They will get all my future business!
 

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Yes that is correct and when the ASOV on the RO senses the solenoid is closed it shuts off the flows to both the treated and waste lines.
 

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Discussion Starter · #8 ·
Thanks y'all. I have my 55 gal tank with a small sump. I'm working on getting my 'into sump' flow (from my overflow) and return flow (from the sump, obviously..) equal due to having difficulties keeping air out of my "U-tube" but right now evaporation keeps my 3rd chamber of my sump low and I have to make sure there is enough water to return to the DT. I'm worried if it gets too low the motor on my MJ will burn out. This isn't a problem as long as I don't go out of town, but I gotta go visiting some time...

I will look into the ATO's
 

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You are not restricting the overflow to the sump in any way are you? The return pump is what determines the overflow rate not the overflow so there hould be no valves or restrictions in the overflow, only on the discharge side of the return pump.
 
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