Best universal auto top off?

monkeyCmonkeyDo · Apr 2, 2019

U read it!
I need a great auto top off that will work both on my nano and 300g.
Buddy swears by the old reliable float switch. just a bobber like a toilet flap or toilet float.

I'm looking at the newer laser levers or sensor ones. Maybe a tunze since they are so reliable and make good quality stuff imo.
thanks!
-d

PiggyPuffin · Apr 2, 2019

I had so many problems with my Tunze Nano ATO that I swapped it out for an XP Aqua Duetto. The Tunze almost overflowed the rear chamber on my 10G AIO numerous times that I just had enough and got something else. I couldn't trust it. For the price, it was poorly made, the shield broke, and the switch and magnet interfered with each other. So far no problems with the Duetto, but I've only had it running 2 weeks.

A&Aaquatics · Apr 10, 2019

I'm using the XP Aqua Duetto as well, never had a single issue.

Hemmdog · Apr 10, 2019

Tunze osmolator , the pricy one. Will be great for your 300. XP Aqua is better for nanos.

RobW · Apr 10, 2019

+1 on the Tunze Osmolator. I hear from a lot of people that the Apex ato is junk. In my old 150 gallon I just had a standard float valve in my sump coming directly from my ro/di. That was before I knew any better. Lol. It worked and never had issues.... but then again I was at the mercy of a 14.00 dollar plastic bobber.

monkeyCmonkeyDo · Apr 11, 2019

Thats what my buddy swears.by...
Lol
D

RandyC · Apr 11, 2019

I have three Tunze Osmolator 3155 running in three tanks. They have been extremely solid for me. I’ve used them in tanks ranging in size from 25-150 gallons. There is a voltage dial inside the control box that controls the pump strength so that you can adjust to your needs for different size tanks or head pressure.

kgk · Apr 11, 2019

Big fan of the Tunze Osmolator 3155 as well.

homer1475 · Apr 11, 2019

Another for the tunze 3155!

Will work on anything from 10G to 500G an on up. Rock solid performance for years and years to come.

Matt Carden · Apr 11, 2019

I got the Autotopoff.com components to run RODI directly to my sump for top offs. I discovered when I moved into my house that I have some seriously high water pressure after I blew not one but 2 garden hoses. I had some trouble with my auto top off would stay running overfilling my sump. I tried stretching the spring on the solenoid but that didn't work(this is what autotopoff.com suggested I try). Last week I ordered an ASCO Redhat solenoid from valvesandinstruments.com and everything is working perfectly.

homer1475 · Apr 11, 2019

You do realize that those short run times are adversely affecting the longevity of your RO/DI unit? Also there are plenty of bad reports of solenoids failing and a setup like you have, will flood the tank when it does fail open.

A&Aaquatics · Apr 11, 2019

Matt Carden said:
I got the Autotopoff.com components to run RODI directly to my sump for top offs. I discovered when I moved into my house that I have some seriously high water pressure after I blew not one but 2 garden hoses. I had some trouble with my auto top off would stay running overfilling my sump. I tried stretching the spring on the solenoid but that didn't work(this is what autotopoff.com suggested I try). Last week I ordered an ASCO Redhat solenoid from valvesandinstruments.com and everything is working perfectly.

If your water pressure is blowing out garden hoses, you seriously need to figure out why that's happening. I assume you are on town water?

MaiReef · Apr 11, 2019

Autotopoff.com dual nano.

Jeight · Apr 11, 2019

kgk said:
Big fan of the Tunze Osmolator 3155 as well.

also a big fan..rock solid unit

Matt Carden · Apr 11, 2019

homer1475 said:
You do realize that those short run times are adversely affecting the longevity of your RO/DI unit? Also there are plenty of bad reports of solenoids failing and a setup like you have, will flood the tank when it does fail open.

I have considered using a reservoir to fill with RODI. I don't understand why the short runs hurt the unit? Does an auto flush prevent the damage?

Matt Carden · Apr 11, 2019

A&Aaquatics said:
If your water pressure is blowing out garden hoses, you seriously need to figure out why that's happening. I assume you are on town water?

After the 2 hoses blew we bought a better hose and we haven't had any problems since. Needless to say we don't leave the spigot on!