ASO kit

[medi]

I want to order an ASO kit so I can automate my ATO system. I plan on hooking this to the existing ATO reservoir that is currently in use, and then allowing my ATO to actually replenish my aquarium volume. The reason I am going to run it this way is that my ATO is what feeds my kalk reactor. I don't believe I could run my Rx with just the water pressure from my home and I don't want to run a booster pump. I am looking for recommendations on brand and the best way to run these systems. Also, has anyone ever heard of one of these things failing and flooding the house?

[Timfish]

Well, showing my ignorance here, I know ATO is automatic top off but what is "ASO" and "Rx"?

[medi]

ASO or automatic shutoff valve is a valve that works together with a float switch and a RODI unit. Basically when the water level decreases and causes the float valve to go down it creates, I think, back pressure which in turn opens the ASO valve and automatically replenishes your ATO reservoir or your aquarium with RO water. Hopefully that helped explain it.

[medi]

Oh yeah and a Rx is a reactor

[Timfish]

Actually I feel dumber now, thanks! My only justification is I hadn't finished my coffee yet. Actually I do have some expierence with them. I have seen one not shut off completely so there is a very slow but steady drip. Having seen check valves, float valves and automatic shutoff valves for R/O filters all fail over the years I would either avoid using them or design a system which would deal with the flooding safely in the event of a failure. I very definitely do not like a system where a potential equipment failure could dilute the salt water in an aquarium system or dump a bunch of kalkwasser into a system pushing up the pH dangeroulsy high! I've seen this happen, not a pretty sight and the only reason we didn't lose everything was by pouring vinegar in to drop the pH. Turning a reef tank into a chemistry experiement is not the best way to learn how to do something.