SKU: 95932333304

Neptune Systems Apex- DOS Dual Reservoir

Sale price$157.05 Regular price$174.50
Save 10%

Pay in installments of $43.62 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 26 - Aug 31

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 24 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Denny Lawson
Port Orchard, US
★★★★★ 5
Best fan I have ever used.
Color: White, Size: 42 inches Wifi
Easy assembly, simple WiFi and Alexa connection. Extremely quiet operation. Fan speeds and oscillating feature are perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
L
Verified Purchase
Lady mays healing
Belleville, US
★★★★★ 5
It has many conveniences
Color: White, Size: 42 inches, Color: White, Size: 42 inches
I like that it detects temperature and determines what fan speed it should be on to control temperature in the room. Its made a notable difference in my warmest room of the house this summer. Its nice and quiet. You can also adjust the blades up or down if you want to redirect the air flow much like in a vehicle. I got the taller fan for the bigger living space i have and it’s comfortable. I feel the air right away. It’s bot like a pedestal fan. This is much more giving to the entire body rather than just the face. It’s also not as intrusive as a pedestal fan. It fits in smaller spaces. It doesn’t block the view like a pedestal fan
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 22, 2025
M
Verified Purchase
Mary Burcham
Draper, US
★★★★★ 5
Liked this so much that I purchased a second one for another room
Color: White, Size: 36 inches
I liked this fan so much that I purchased a second one for another room. Works well, has 5 different speeds, several functions and setting. Has a remote control and a space on the fan that holds the remote. I was initially torn between this fan and another brand, but chose this one because it can be easily taken apart for cleaning. Also it is a very good value for the cost. It is not silent, but it is not loud at all. The fan is very sturdy and easy to assemble. The only assembly is a giant plastic nut on the bottom that holds the stand in place. IMO if you choose this fan, you will not be disappointed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
U
Verified Purchase
Upstate NY Girl
Omaha, US
★★★★★ 5
Most comfortable pillows for my back
I have a really bad back along with sciatica so I use these pillows on my recliner chair, one for my back and one under my bottom. They make all the difference in the world. They are soft and squishy yet still offer support. They are a great value for sure. This blue color was about half the price of other colors with was fine with me because I put washable covers on them anyway. I frequently fall asleep on them. My dog loves when they accidentally fall on the floor because he curls up on them and falls asleep. He finds them very comfortable. I can't say enough good about these. They would be great on a bed or couch too or even as a floor cushion. They are high quality, well made pillows.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
J
Verified Purchase
JM's Be Fabulous
Lexington, US
★★★★★ 5
Pillow
Color: White, Size: 18x18 Inch
Great pillow and fit the cover perfectly! So soft and durable! The perfect item I was looking for. The appearance is great after the cover is added.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026

recommand products