Works Great.. By Joseph on 3/19/2017
Joseph would recommend this product to a friend
I was having Issues with the old pump. They new one works so well. I hope I get another 3 years from this one. :)
Works but you need to read the directions By Kecked on 2/25/2017
Kecked would recommend this product to a friend
This unit is designed for smaller tanks. It is designed to shutoff after a period of time regardless of the float to protect from over filling a small tank. That's why you had to unplug it and turn back on. There is a jumper to stop that. See manual. Ps it also will save your pump from dry running.
Excellent System By Huck on 12/28/2016
Huck would recommend this product to a friend
I have been running my TUNZE ATO system for about 4 years. I started out with a 50 Gal reef adn after two years upgraded to a 125 gal reef, and the TUNZE ATO has run through the transition flawlessly. I purchased a spare pump when I purchased the system 4 years ago, and it is still in the packaging unopened. My original pump is still in service. I did run into a small problem after two years of service, as I used kalk in my makeup water, and the pump stopped working. I simply placed in a distilled vinegar/RO water solution and let it stand for a few days, and then the pump started working again. Kalk will definitely reduce the life span of pump as it was not designed to pump a pastey Kalk solution. I upgraded to dosing 2 part and removed Kalk from my system altogether. If this unit is running strictly RO water it will last. for a long time.
Just in case!! By Badabing on 10/17/2016
Badabing would recommend this product to a friend
I'm replacing my three year old pump, it still works but it's starting to make alittle more noise so for $20 I'm changing it and keep the other for a spare, never a problem with this ato!!!
Quality at a great price. Always have a spare By Fred on 9/14/2016
Fred would recommend this product to a friend
The Tunze ATO is the best ATO on the market and it's always good to have a spare pump on hand, because for the price, you ant afford not to.
All around quality and easy to swap out/install. Small, quiet pump but still really strong.
When you need to replace your Osmolator pump ... By Larry on 4/25/2016
Larry would recommend this product to a friend
This is a cheap, easy replacement.
Good experience despite what some other people have said. By Seanj on 3/16/2016
Seanj would recommend this product to a friend
I'm still on my first pump that came with my osmolator, and it's been running for almost a year sucking kalk probably everyday in pretty much the most extreme situation possible for an ATO pump. I will happily buy a replacement before it quits just to have it on hand.
Great product! By dallast on 12/8/2015
dallast would recommend this product to a friend
Bought ato on EBay, so when pump failed I was out of luck with tunze directly. Customer service at tunze was fantastic through reef2reef forum. I'm quite sure had I purchased new, he would have just sent me a new pump immediately.
I love this ato and I am not sure how I lived without it for so many years.
great stuff By reefer matt on 12/7/2015
reefer matt would recommend this product to a friend
I decided to buy this as a back up. My original one is still kickin after 4+ years .
Great! By Philip on 12/7/2015
Philip would recommend this product to a friend
Pump is super quiet an real easy to set up.....just using with ato not dosing so it works awesome