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Barrel Tender V2
Barrel Tender V2
Barrel Tender V2

Barrel Tender V2

19
$ 209.99 $ 159.99

 

The Barrel Tender is a unique device designed to automatically regulate reverse osmosis (RO) water production and greatly reduce the negative effects of TDS creep.  The Tender senses when the RO reservoir is nearly empty, then turns on the RO system until the reservoir is full.  This allows the RO unit to run for longer periods of time, which maximizes filter efficiency.  

New Features

New for the V2 Tender is a Neptune Apex and GHL Profilux aquarium controller integrated version, which allows you monitor and fine tune RO water production.  The aquarium controller version does require an Apex or Profilux controller and a break out box or input board, respectively.  We have several break out box options here. Also, the new housing design incorporates a super bright edge-lit acrylic top, so you can see when it is active even when tucked away in the corner of your basement.  Lastly, we upgraded several key components and made it even easier to install.  

 

Convenience

Reverse Osmosis water reservoirs are conventionally difficult to keep full on a regular basis due to the need to manually turn the system on and then remembering to turn it off hours or even days later.  Larger remote vessels can run dry due to "out of sight, out of mind" circumstances, resulting in having no water when you need it.  We have even heard of people using timers, keeping their RO reservoir in a bathtub to prevent floods caused from forgetting to turn the system off, and other wacky solutions that lead to frustrations with aquarium keeping.  The Tender is a set it and forget it solution for top off water production.

Efficiency

TDS (Total Dissolved Solids) creep occurs when previously removed pollutants on one side of the RO membrane leach across into leftover water on the "clean" side.  When the RO unit is restarted, these pollutants are washed out with the first little bit of "good" water.  If you are using a Deionization (DI) postfilter, the DI resin then absorbs this little blast of pollutants, but the result is that the DI resin is exhausted faster.  Otherwise, the pollutants go into your aquarium.  You get this little pollutant blast every time the system switches on, even when using an autoflushing system.  Running an RO unit for just a few ounces of water at a time, e.g., each time your top-off pump turns on and opens a float valve, means you are effectively losing the benefit of the RO membrane.  Conversely, If your RO system is allowed to run for longer periods of time, that initial pollutant blast is largely diluted by the large volume of clean water that follows.  If you are using a DI postfilter, this means the DI resin only has to pull out the initial pollutants once for a large volume of water, rather than many times over each small on/off cycle.  The bottom line is you'll save a lot of money on DI resin replacement.

Specs:

Footprint: 6" x 4.5" 
Height: 5"

Power: 12v 

Rated for booster pumps up to 135 PSI.  Requires an Auto Shut Off Valve (ASOV) on RODI unit.  The Apex version requires a Neptune Apex controller and a Break out Box

Using the Barrel Tender with a GHL Profilux requires a PLM-ADIN add-on board, and a db9 terminal adapter.  See this thread on Reef2reef.com for more details.

What's included:

Barrel Tender with your choice of control and plug type along with all the tubing, fittings and nuts and bolts to install on barrels up to 32" deep along with a drilling template. Extra rigid tubing for deeper water reservoirs is available here.

See this template for dimensions required for installation.  We include a cardboard version of this in the box for installation convenience.

 

Apex version installation and programming instructions

 

Customer Reviews

Based on 19 reviews
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  • Reviews (19)
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CK
10/04/2017
Charles K.
United States

If you're reading this

Just go ahead and buy it. No Ragrets :)

MB
09/13/2017
matt b.
United States

Does exactly what it is meant to

Install was easy and straight forward it took about 15 minutes and most of that time was wondering where I put down the tape measure last . After set up was complete I hooked up my rodi and it filled the trash can I used to the top than shut off so I'm happy

JP
09/12/2017
Jeffrey P.
United States

EXCELLENT customer service as always

Overall experience was and always has been top-notch.

TO
04/25/2017
Todd O.
United States

Barrel Tender V2

I love this thing!

JB
03/16/2017
Jack B.
United States

Great Product

I have made 2 full batches of RO/DI water since getting the Barrel tender involved and the process is much nicer. I used to leave my RO/DI on all the time which resulted in constant small batches since I pull my ATO water directly from RO/DI storage and this is the perfect solution to keep my RO/DI running efficiently. Installation was very easy and painless.