Recommend Topup Controller

[Ron99]

Autotopoff.com. Get the double float valve unit that has the second one as a safety shut off.

[kien]

Originally Posted by Ron99

Autotopoff.com. Get the double float valve unit that has the second one as a safety shut off.

+1. Have used theirs on 3 different tanks and for over a year of usage without a single issue. The pump was a cheap little $10 pump that also has not had any issues over the past year and it has run dry quite frequently.. oops!

[Jessie55]

I bought the jbj unit and i am loving it. It has two sensors so you can configure it a few different ways and it has a safety so that it will only pump for a certain amount of time continuosly. That way as long as you have a slow pump there is no risk of pumping the entire contents of your resevoir should something fail.

[martinmcnally]

The biggest problem I have with the Tunze controllers is it only supplies 12v to their pumps. So when the pump dies as it often tends to do (with me anyways) if it ever runs dry you have to get their pump replacement.

I see Autotopoff.com uses 120v pumps which I think will be way better should they ever need replaced.

I think I am going to go with that and see how it works. Its also about $190 cheaper lol.

The light sensors that Tunze uses are pretty cheap I think you can get them for about $5 so not sure why their model is way more expensive, probably because of the cool flashy lights they have on the controller lol.

[whatcaneyedo]

I bought a partially used Tunze 4 years ago. The pump was new but the rest was at least a year old. I paid $50 for it and have never had a problem. It has been the best $50 I've spent on this hobby so far.

[dynamite]

Is anyone using the elos osmocontroller 2?

[amoreira]

that uses the 12 V signal to activate a 110 VAC pump. This is good for large aquariums where the dinky pump they supply is not big enough. I found that my pump would burn out if some dirt or something got into the pump and jarred it. I put the pump in a filter sock and found it has lasted a lot longer (maybe my imagination). Nothing beats the optical sensor for reliably sensing the level IMO. Works even when it gets gummed up with gunk or invaded by bubbles from the skimmer output.

[amoreira]

If you don't like using the low voltage pump, you can get a Tunze relay that uses the 12 V signal to activate a 110 VAC pump. This is good for large aquariums where the dinky pump they supply is not big enough. I found that my pump would burn out if some dirt or something got into the pump and jarred it. I put the pump in a filter sock and found it has lasted a lot longer (maybe my imagination). Nothing beats the optical sensor for reliably sensing the level IMO. Works even when it gets gummed up with gunk or invaded by bubbles from the skimmer output.