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
Burn out By Bill on 8/17/2015
Bill wouldn't recommend this product to a friend
I ordered one of these after my first pump quit around month 2. Now this one has quit as well in less than 2 months. I love the ATO but these pumps are junk.
Nice; when it works By Gary Gipson on 7/23/2015
Gary Gipson would recommend this product to a friend
The only weak link in the whole TUNZE system. TUNZE osmolator is the absolute best and reliable ATO system out there which is the only reason I put up with the pump that is less than desirable as far as reliability. If they fix this issue, they will own the ATO market.
Works By Homebrwr on 3/28/2015
Homebrwr would recommend this product to a friend
The replacement pump I received works and the pump was the problem. The reason I rate this 3 stars is that my first pump lasted one year and there is no way to open this pump up to see if the pump can be easily fixed.... Seems the mfg did this purposely in order to sell pumps after the sale of the ATO unit.
Not robust enough By lrnasd90 on 12/12/2014
lrnasd90 wouldn't recommend this product to a friend
This is the second pump I have purchased in less than two months. Maybe the first was defective. I will not purchase a third. I would like to see a pump that is serviceable. Not just a throw away when it quits working. Maybe the first pump sucked up a little kalk, but I have ran plenty of other pumps exactly like this setup and never had a problem before. You can't even take it apart to see if it has something clogged in it. I bought the complete brand new ATO system for a small tank I setup. I do put a small amount of kalk in the ATO container, but the pump is held off the bottom a good 3 inches. Most all pumps I don't even do that. The pump on my big system lays directly on the bottom and has been working over 8 years. And its cost is on par with this unit. I do like the Tunze ATO system itself, just not their chosen pump.