SKU: 95932333304

Neptune Systems Apex- DOS Dual Reservoir

Sale price$157.05 Regular price$174.50
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Description

Neptune Systems Apex- DOS Dual ReservoirDOS Dual Reservoir with Optic Sensor DDR This attractive fluid containment system stores your dosing fluids in style and even tells you when its time to refill! Each side stores two liters (2L) of fluid Connects directly to your DS Optical sensors inform your APEX when levels are low Strong, cast acrylic construction Low profile wont easily tip over Easy to refill Push fit tubing connections Use for 2 part (Alk Cal), additives and other applications

DOS Dual Reservoir with Optic Sensor – DDR

This attractive fluid containment system stores your dosing fluids in style and even tells you when it’s time to refill!

Each side stores two liters (2L) of fluid
Connects directly to your DŌS
Optical sensors inform your APEX when levels are low
Strong, cast-acrylic construction
Low-profile – won’t easily tip over
Easy to refill
Push-fit tubing connections
Use for 2-part (Alk/Cal), additives and other applications

Style Meets Function, Deceiving Capacity, No-tip design

The DDR has great style and will stand out in anyones equipment room. But it’s not just about style. It may not look like it, but each side of the reservoir holds an ample two liters (2000 mL) of fluid. For most saltwater aquariums that are dosing Calcium and Alkalinity to their aquariums, this amount is more than enough to last at least two weeks. If you were dosing other additives it might last months before needing a refill.

Speaking of refills, the DDR has easy lift off lids that make refilling it super easy.

The DDR was also designed to have a low center of gravity. This means, unlike other reservoirs on the market, it is very difficult to inadvertently tip over and ruin your day.

Optical Sensors Alert You When It’s Time to Refill

The DDR is the only dosing container on the market that connects electrically to your DŌS and uses optical sensors that alert you when your fluid has approximately 20% remaining. This alert could be used to send you a text or an email, or even trigger other events on your Apex. Also, when detecting water level, optical sensors are far less likely to fail than their float switch counterparts.

Ready for Apex Fusion

Although not required, the DDR interfaces directly into your Apex Fusion dashboard. See in realtime your fluid levels and get an alarm when a reservoir runs low.

Specifications
Size (Approx.): 10.5″ x 8.5″ x 5.5″
Fluid Capacity (Approx.): 2000ml per side
Weight (Approx.): 2 pounds
Requires: Apex, Apex Lite, or Apex Jr. and DŌS to operate sensors
Package includes: DDR, 4m of DŌS tubing

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 95932333304

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4.2 ★★★★★
Based on 15 reviews
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A
Verified Purchase
Amanda matlock
Carnegie, US
★★★★★ 5
Highly recommend.
Size: 0.06 Ounce (Pack of 16)
My puppy absolutely loves these to give them to her every single morning when I leave for work keep her busy while I’m gone.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 1, 2025
Y
Verified Purchase
Y. Dulak
Battle Creek, US
★★★★★ 5
Keeps pups busy, good for chewers.
Size: Medium, Color: Antler
My dogs love this product. Keeps them busy and it lasts. Just watch out for your feet when they drop it! Heavy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
M
Verified Purchase
Margaret F.
Battle Creek, US
★★★★★ 5
Power Chewer Loves This!
Size: Medium, Color: Antler
This is my dog's new favorite chew! She loves that she can hold it in her paws. I think she really loves the taste and texture of it. I don't give her antlers as I have heard too many horror stories about broken teeth. I also don't give her nylon toys as I have also heard a lot of horror stories of broken teeth as well as concerns about them digesting the plastic. This is between antlers and bully sticks, which is perfect for a power chewer. I feel comfortable with her eating the pieces that flake off this toy. She loves chewing and she will default to this toy when she wants to help calm down. I don't notice much of a smell. It does flake, but not enough I will even take a star off. Plus, it's plant based and vacuums up easily once dried. It doesn't capture her attention as much as bully sticks or beef cheek chews, but it's much less expensive over time and doesn't stink up our living room! She will also always pick this over any of her rubber chews. Great product and recommend it for all the power chewers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 23, 2025
J
Verified Purchase
JA
Grantham, US
★★★★★ 3
Crumbly, odd texture
Size: Large, Color: Duo Pack
Neither of my dogs were very interested in these. They did chew on the antler-shaped versions more so than the infinity-style versions. When they did chew on these, they didn’t hold up well or last long. These have a strange, crumbly texture when chewed. You’ll find bits and pieces of these chews where the dogs have been chewing. Will not be reordering.
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Reviewed in the United States on April 5, 2026
M
Verified Purchase
Michael Quiroz
Whiting, US
★★★★★ 4
This appears to be a good alternative to the hard plastic chew toys.
Size: Large, Color: Duo Pack
My dog is a heavy chewer. I decided to try this brand out after using a different brand for quite awhile. while my dog seems to like it and carries it around (the pretzel shaped one) he doesn't seem to attack it as whole heartedly as his old brand, I'm thinking it might be the shape, we will see when he wears it out and I switch him to the antler shape. What I like most about it is it doesn't tear my hand up like the other brand did after he had been chewing it for awhile. While it is wearing down some it seems to do it in a more mild manner. Since we haven't had it long I would give this 3.5 stars because I don't know if it will last as long and not sure f it is just the shape that has him more mellow with it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026

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