Go look at a synergy sump setup with the matching ato reservoir. The 2 units connect via ro tubing attached to 2 90deg push connect elbows. The sump and res are tall enough that a siphon shouldn't happen.Any non peristaltic pump will siphon if installed improperly. If one is not able to install correctly, then a peristaltic pump is the best option.
Actually I changed the pump because I moved the location of my ato res across my garage to accommodate a bigger container and had to run the tubing across the ceiling.Its ok if you discount my take because I'm a beta tester.
But I purchased the pmup BEFORE I became a beta tester and used it for a while.
I also run a Synergy sump. A CL44 with ATO reservoir. And I have no siphon issues.
Feel free to ask others. You run 2 different pumps and have a siphon. What is the common denominator? Switching to a peristaltic pump stopped the siphon.
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Yet I posted in the same post that the sicce syncra micro didn't have the same issue. Last I checked and I can go check again in a box but the syncra is the same type or pump as the pmup and tunze.Lol. Ok. No assumptions made. All are facts you posted.
You said the pmup and that Tunze sucked because they cause a siphon in your Synergy sump. But you have no issue with a litermeter.
Now you say you changed pump because you had to move the ato reservoir. This was never mentioned.
But still doesn't change the fact that I have no siphon issues with my pmup, or my Tunze 3155 for that matter, in my Synergy Sump.
It funny how people react when their statements get challenged and holes poked in it.
Back to regular programming. Feel free to make a post about how the pmup and the Tunze ato pump suck because they cause a siphon in your sump. We can move the discussion there.
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I've always paid a bit more to get the Madison brand reed float switches. Haven't had one fail yet, but the current crop are only 4 years old.