Pro Clear Red Flex Auto Top Off Reservoir 6 gal.
Pro Clear Red Flex Auto Top Off Reservoir 6 gal.
Pro Clear Red Flex Auto Top Off Reservoir 6 gal.
Pro Clear Red Flex Auto Top Off Reservoir 6 gal.
Pro Clear Red Flex Auto Top Off Reservoir 6 gal.
Pro Clear Red Flex Auto Top Off Reservoir 6 gal.

Pro Clear Red Flex Auto Top Off Reservoir 6 gal.

Brand: Pro Clear Aquatic Systems
Item Number: 386000

Regular price $124.84 On Sale

Only 2 left in stock!

Estimated Arrival: Between Aug 05 and Aug 11. *ETA for USA only. For accurate lead times, call us at 727-214-7750

Large, Custom, Or Backorder: Arrival Times May Vary.

Shipping Policy: Little or No Shipping Charges for Regular-Sized Items; We Cover Part of the Freight Costs for Large Items Shipped Nationally. See Shipping Policy.

It's common knowledge in the aquarium industry that having a larger potential water capacity in your system is almost always a good thing. It gives you more space for media or other hardware, more dosing leniency and leeway for reef tanks, and a lower risk for overflow if something does go wrong.

This is where the Pro Clear Red Flex Auto Top Off Reservoir comes in. Sporting a modern and durable red and white reinforced acrylic design, this reservoir is a stylish and reliable way to increase the maximum capacity of your aquarium system.

The reservoir has two clear sides and two white sides to match the Red Flex Sumps, and comes with a red acrylic lid with a handle for ease of access. The lid fits snugly into a recess in the top of the reservoir, meaning it's easy to lift but won't slide around if bumped or moved.

The auto top off also includes built-in feed line and pump chord slots next to the lid, allowing everything going into and out of the sump to be orderly and managed.

This specific reservoir model is the 6 gallon model. There is also a 10 gallon model:

  • Dimensions: 12"L x 8"D x 16"H
  • Capacity: 6 gal.
  • Material: Acrylic
  • Shape: Rectangle

Here is a video from our good friend Billy Pipes showcasing the features and advantages of the Red Flex Auto Top Off Reservoir as well as he explains how he will be incorporating them into his existing systems.

Of course, all credit for these videos goes to Billy, and to show some thanks for his generosity, check out the rest of his channel here and subscribe if you enjoy his content!


Below is a PDF Document with additional info about the Pro Clear Auto Top Off Reservoirs

Download Pro Clear ATO Info PDF

Sump Warranty

All Pro Clear sumps purchased through Two Tides include a Limited Lifetime Warranty on defects in manufacturer workmanship such as leaks or cracks. This includes all Red Flex Sumps, EcoReef Sumps, and Premier Wet/Dry Filters. Please note that coverage under warranty can only be granted to the original purchaser.

See "Warranty Coverage" below for how to register for your Lifetime Warranty.

Tank Warranty

All Pro Clear tank systems purchased through Two Tides include a 36-Month Limited Warranty on defects in manufacturer workmanship such as leaks or cracks. This includes all ProStar and Acrylic Cylinder Aquarium Systems. Lighting systems and pumps are covered under a 12-Month Limited Warranty if included. Please note that coverage under warranty can only be granted to the original purchaser.

See "Warranty Coverage" below for how to register for your 36 Month Warranty.

Warranty Coverage

Click Here to Register for Warranty

The Two Tides warranty through Pro Clear Aquatic Systems protects against any leaks that occur during the warranty period due to manufacturer workmanship. If such a leak occurs, a new and fully functional product will be sent out to the customer immediately.

This warranty also covers any small part breakages or failures. If a part happens to break or fail within the warranty period, either replacement parts or an entirely new product will be sent to the customer. Instructions will also be sent to the customer for how to properly and safely install replacement parts.

Photos of damages or failures as well as a throughly detailed explanation may be required to be provided to Two Tides before we can process a warranty claim and send a replacement product. This is especially important in the event of cracks or other more serious damages.

Shipping, Cancellations, and Exchanges 

If a Pro Clear product is purchased before noon on a business day, it is generally shipped out the same day. If a purchase is made after noon on a business day, it is generally shipped out first thing on the next business day. 

Because of this very short order to ship out time frame, cancellations must be made within the first few hours of product order, and FULL refunds, although mostly fulfilled, are not guaranteed (because of labor time, the fact that the product may already be fully packaged, and that shipping arrangements may have already been made). As a general rule, if it has been more than a half to one full business day from the order date or if a tracking number has already been created, then the order is unable to be cancelled. To ensure you get a full refund if you decide to cancel an order, email us ASAP at

In general, exchanges are not accepted for Pro Clear products and are not an option under warranty. Replacement products/parts are the usual option to go with.

Warranty Questions

If you have any questions or need clarification on the above mentioned warranty information or need to submit photos and a written explanation of damages/failures, contact us at We'd love to hear from you!

Warranty Registration Form

Customer must have filled out the online Warranty Registration Form for Pro Clear (linked below) within 15 days of the original purchase date to be able to claim this warranty. This will grant the customer an Entry ID Number which will be needed if the customer ever decides to file a claim for their warranty.

  • Click Here to Register for Warranty
  • It is strongly recommended that the customer fill out and submit the Warranty Registration Form directly following purchase to ensure there are no issues if a warranty is claimed later. We will send you emails about this to remind you.

Steps to Filing Warranty Claim

  1. Make sure you have filed a Warranty Registration Form online (linked above). Note that if this form is not completed and submitted within 15 days of purchase, the warranty will NOT be eligible. This form will provide you with an Entry ID Number. Once this Entry ID Number is distributed, the Lifetime Warranty is then in effect.
  2. Email Provide a brief explanation of the issue with your item. Some examples may be, “The product/package was damaged when I received it (and what types of damages)”; “The product doesn't work properly/as advertised”; “Parts were missing”; etc. Your email should include the following information:
    • Name:
    • Address:
    • Contact #:
    • Email:
    • Product name & item #:
    • Entry ID# (provided at warranty registration)
  1. From there, a representative from Pro Clear will be in contact with you to walk you through the rest of the process.

Keep in mind that all warranty claims are at the discretion of Pro Clear Aquatics. If you file a warranty claim, that is not a guarantee that it will be accepted.

As always, if you need any clarification or if there’s anything else we can help you with, please don’t hesitate to reach out to us at

Have any further questions that aren't answered here? We'd love to hear from you, and learn how we can help you be as successful as possible in this wonderful hobby.

You can call in to 727-214-7750 to speak with Tyler from our team to determine how to create your Ideal Aquarium Build.

Also feel free to reach out to us at and we will aim to respond back within the next few hours.


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