Trying to decide which ATO to purchase

las · 04/04/2015, 08:07 PM

Hi - I'm looking at these units:

Tunze osmolator
Spectra pure
Avast ATO

Does anyone have any advice? I've read a few threads and seems like the tunze is as reliable as it gets. Also, seems the spectra pure is the most accurate for keeping salinity rock solid/stable. Does anyone with experience with these units want to help a brother out?

Thanks for the help

reefwiser · 04/04/2015, 08:14 PM

I use Tunze never a problem.

jem454 · 04/04/2015, 08:31 PM

Tunze seems to be the most popular.
I have a spectrapure, and you can't beat it. My ato is in basement an it easily pumps upstairs through 30 foot of hose.

Another reason I went for it is when I start dosing kalk.
Kalk water is hard on pumps. With a peristaltic pump you don't need to worry about it.

las · 04/04/2015, 09:08 PM

Quote:

Originally Posted by jem454

Tunze seems to be the most popular.
I have a spectrapure, and you can't beat it. My ato is in basement an it easily pumps upstairs through 30 foot of hose.

Another reason I went for it is when I start dosing kalk.
Kalk water is hard on pumps. With a peristaltic pump you don't need to worry about it.

Is the spectra pure better for precise salinity parameters? Does it have fail safes?

jem454 · 04/04/2015, 09:39 PM

Yes it has fail safes, and is very accurate.
It is basically a dosing pump, which are designed to be slow and accurate.

firemountain · 04/05/2015, 12:37 AM

The Avast by far. It runs off the same concept as the Spectrapure with the pressure switch but the big difference is that the avast is held in place by a strong magnet, and not suction cups like the Spectrapure. Also...you can configure the Avast ATO with a optional float switch as a backup.

I heard great things about the Tunze.... But I like the idea of the pressure swith better.

Slawdude · 04/05/2015, 03:09 AM

I have used the Tunze for the last 8 years without a hitch in three systems. I would use the Tunze again bed on my experience.

I have not tried the other two.

las · 04/05/2015, 10:11 AM

Quote:

Originally Posted by Slawdude

I have used the Tunze for the last 8 years without a hitch in three systems. I would use the Tunze again bed on my experience.

I have not tried the other two.

seems like everyone says the tunze is as reliable as it gets

DDRR · 04/05/2015, 10:24 AM

Tunze , never failed in several years on different systems

DaveMorris · 04/05/2015, 10:48 PM

I use the Avast digital version. It is connected to my RKE system and has been flawless and worry free for quite some time. I really like the setup especially the magnet mount.

04/04/2015, 08:07 PM	#1
las Registered Member Join Date: Sep 2003 Location: chicago Posts: 1,012	Trying to decide which ATO to purchase Hi - I'm looking at these units: Tunze osmolator Spectra pure Avast ATO Does anyone have any advice? I've read a few threads and seems like the tunze is as reliable as it gets. Also, seems the spectra pure is the most accurate for keeping salinity rock solid/stable. Does anyone with experience with these units want to help a brother out? Thanks for the help

04/04/2015, 08:14 PM	#2
reefwiser Registered Member Join Date: Nov 2013 Location: Louisville,Kentucky Posts: 1,208	I use Tunze never a problem. __________________ President Louisville Marine Aquarium Society. http://www.lmas.org/ The 3rd Annual Frag swap will be held September 23rd,2017 11 am till 3pm Saint Thomas Fellowship hall,9616 Westport Road,Louisvi

04/05/2015, 12:37 AM	#6
firemountain Registered Member Join Date: Apr 2014 Location: Bergen County, NJ Posts: 1,033	The Avast by far. It runs off the same concept as the Spectrapure with the pressure switch but the big difference is that the avast is held in place by a strong magnet, and not suction cups like the Spectrapure. Also...you can configure the Avast ATO with a optional float switch as a backup. I heard great things about the Tunze.... But I like the idea of the pressure swith better. __________________ Eshopps RS100 sump, Eheim 1262 return,Kessil 360WE w/controller, Avast ATO w Litermeter 3, RO Regal 170sss Skimmer, Sicce XStream-e pumps /dc controlled, Spectrapure Dual Reactor Current Tank Info: 65g mixed reef

04/05/2015, 03:09 AM	#7
Slawdude Registered Member Join Date: Jun 2012 Location: Down South Posts: 74	I have used the Tunze for the last 8 years without a hitch in three systems. I would use the Tunze again bed on my experience. I have not tried the other two. __________________ The rock is hard, the stone cutter is patient..... Current tank setup: http://www.masa.asn.au/phpBB3/viewtopic.php?f=148&t=248587

04/05/2015, 10:48 PM	#10
DaveMorris VP, SDMAS Join Date: Nov 2006 Location: Sunny San Diego, CA Posts: 1,309	I use the Avast digital version. It is connected to my RKE system and has been flawless and worry free for quite some time. I really like the setup especially the magnet mount. __________________ Dave My 130g tank: http://www.reefcentral.com/forums/showthread.php?t=2387989 Current Tank Info: 130g build in progress

04/04/2015, 08:31 PM	#3
jem454 Registered Member Join Date: Dec 2006 Location: ny Posts: 86	Tunze seems to be the most popular. I have a spectrapure, and you can't beat it. My ato is in basement an it easily pumps upstairs through 30 foot of hose. Another reason I went for it is when I start dosing kalk. Kalk water is hard on pumps. With a peristaltic pump you don't need to worry about it.

04/04/2015, 09:39 PM	#5
jem454 Registered Member Join Date: Dec 2006 Location: ny Posts: 86	Yes it has fail safes, and is very accurate. It is basically a dosing pump, which are designed to be slow and accurate.

04/05/2015, 10:24 AM	#9
DDRR Registered Member Join Date: Jan 2009 Location: CA Posts: 297	Tunze , never failed in several years on different systems