Puratek 100 GPD RO/DI Filter System - AquaMaxx



You'll receive 15% off all your replacement sediment filters, carbon filters, DI cartridges and membranes FOR LIFE.

Puratek Replacement Filters

Garden Hose Adapter (Sold Separately)

Replacement Sediment Filter Cartridge

Replacement Carbon Block Cartridge

Replacement DI Resin Cartridge

Replacement 100 GPD Membrane Cartridge

RO/DI Flood Guardian by XP Aqua

Puratek 100 GPD RO/DI Filter System – AquaMaxx

The Puratek 100 GPD RO/DI System by AquaMaxx is a high-quality water purifier designed to provide maximum purity and minimum waste. This unit utilizes 4 stages of filtration and features a manual back-flush and an automatic shut-off valve.

The unit features integrated manual Back-Flush valves to maximize the life and output of the membrane cartridge. Performing routine manual system Back-Flushes preserves the longevity of the membrane and increases efficiency. The unit is further furnished with an easily viewed oil-filled pressure gauge and an automatic shut-off valve which halts all water transit during instances of back-pressure. Under standard operating parameters, this Puratek system achieves a product/waste water ratio of approximately 1:2.5.

For added user-convenience, this unit features clear, easy-to-view canisters to quickly assess cartridge life, as well as standardized fittings to ease the task of routine maintenance.

  • Produces up to 100 US-Gallons/day. Tested at 60 PSI & 50°F
  • 4 Treatment stages
  • Oil-filled pressure gauge
  • Approximate 1:2.5 Pure/Waste water ratio (source water temperature dependent)
  • Easy to view precision Oil-filled pressure gauge
  • Manual Back-Flush system prevents TDS creep
  • Includes canister wrench and installation adapters and fittings

AquaMaxx Puratek RO/DI System Comparison

Puratek 100 GPD RO/DI Puratek Deluxe 100 GPD RO/DI


High Efficiency Booster Pump:
Automated Microprocessor Controller:
Digital TDS Meter:
Oil-filled pressure gauge:
Auto Shut Off
Back Flush: Manual Automatic


Gallons per Day: 100 GPD 100 GPD
Treatment Stages: 4 4
Waste to Product Water Ratio: 1:2.5 1:1.5
Rejection Rate: 99% 99%
Footprint (Length x Depth): 15" x 6.7" 15" x 8"
Height: 15" 18"
Membrane: Pentair TFC Membrane Pentair TFC Membrane
Carbon Filter: 5 µ carbon block cartridge 5 µ carbon block cartridge
Sediment Filter: 5 µ polypropylene sediment cartridge 5 µ polypropylene sediment cartridge
Deionization Cartridge: High capacity resin DI cartridge High capacity resin DI cartridge

What`s in the Box?

Canister Wrench:
Faucet Adapters & Fittings:
OD Tubing


Manufacturer Info

AquaMaxx is a Southern California-based aquarium supply company that entered the market in mid-2008 with a line of affordable metal halide bulbs. The brand quickly gained recognition as word spread about the high quality and low cost of their lamps. In 2009, AquaMaxx released a line of aquarium filter socks and, in early 2010, unveiled an assortment of high-performance protein skimmer accessories and upgrades.

Ask a Question Earn 15 Points when you answer a question
Sort By :
9 Questions
Displaying questions 1-9

Free, Fast, and Flexible Shipping Options

  • $5.99 flat rate shipping for orders under $39

    Most orders under $39 ship for only $5.99 using a mix of economy shipping methods including UPS Ground, USPS First Class, and/or SurePost. Your order will be delivered in up to 7 business days after it ships out.

  • free shipping for orders $39+

    We ship 99% of the products we carry for free within the contiguous United States using a mix of economy methods including USPS First Class Mail, SurePost and UPS Ground. Your order will arrive in up to 7 business days. Just spend $39 or more!

  • free faster shipping for orders $250+

    Over 90% of shoppers receive their orders within 1-2 business days. Upgrade from free economy shipping to faster shipping for only $5.99—or spend $250 and we'll upgrade you automatically!

  • need your order even faster? no problem!

    Expedited shipping services are available for most products if you are in a hurry. Get guaranteed delivery in 2 business days, 1 business day, or next day by 10:30 am. Costs vary by location.

  • buy it today and we'll ship it today

    Same-day shipping is available Monday-Friday for most products—place your order by 10:30 am PST. Pre-ordered and back-ordered items do not qualify, nor do drop-shipped, live, or frozen shipments.

  • live plants, live foods, and frozen foods delivered to your door

    We ship live plants, live foods, and frozen foods within the contiguous United States. Each of these categories is subject to its own $19.99 flat-rate shipping fee to cover the special packaging and/or expedited shipping costs required to ensure safe delivery. Orders with 12+ live plants ship free!

Learn More About Shipping

60-Day Return Period with Easy Online Returns

Return any new and unused item within 60 days for a full refund. Having difficulty with a product? Contact us to speak with an aquarium expert. If you need a replacement, fill out this form.

A small segment of the 180+ brands we carry require that customers contact them directly if/when problems arise. You can view the full list of those brands and get their contact info here.

We are unable to accept returns of Digital Aquatics, Neptune Systems, Vertex Aquaristik, Aqua Illumination (AI), EcoTech Marine, GHL, or Seneye products once the manufacturer's packaging seals have been broken.

Marine Depot is an authorized reseller for every product we carry. That means when you buy aquarium supplies from us, your products are not only backed by our own 60-day return policy, they also carry full factory warranties, where applicable. Some items have a 1-year warranty, others have limited lifetime warranties. Warranty coverage varies from manufacturer to manufacturer, so please read the product description of the item(s) you are considering thoroughly for details or contact us if you have warranty questions.

Learn More About Returns

Earn 5% Cash Back for Most Purchases

Rack up reward points to earn discounts on future purchases! You can earn reward points by creating an account, writing reviews, referring friends, subscribing to our newsletter, buying products, and more!

  • Earn 5 reward points for every $1 you spend to get 5% cash back
    Most Products
  • Earn 1 reward point for every $1 you spend to get 1% cash back
    Abyzz, American Marine, AquaIllumination, AutoAqua, CoralVue, Digital Aquatics, EcoTech Marine, Giesemann, GHL, Hanna Instruments, Hydor, IceCap, Innovative Marine, Iwaki, Kamoer, Kessil, Klir, Korallen-Zucht, Maxspect, Mur-lok, Nano Box, Neptune Systems, NYOS, Oceanbox Designs, Pax Bellum, Radium, Red Sea, Reef Glass, Reef Octopus, Seneye, Somatic, Tunze, Vertex Aquaristik, and Waterbox Aquariums

You can also get bonus reward points by purchasing select items during special sales and promotions.

Learn More About Rewards

UJ77091 Puratek 100 GPD RO/DI Filter System - AquaMaxx // AquaMaxx InStock 159.99 USD 0.0 0