Great Aquariums Start Here
1-800-566-3474
    Free Shipping On $175+
  • FREE Shipping On $175+
  • 14-Day Low Price Guarantee
  • 14-Day Low Price Guarantee
  • Same Day Shipping
  • Same Day Shipping
FREE Shipping on Orders Over $175
FREE Shipping on
Orders Over $175
Standard ground shipping (1-7 business days) starts at a low $5.99 and most orders over $175 ship FREE. Learn More
14-Day Low Price Guarantee
If you find a product we sell for a lower price at another online store, we will match their price—today and up to 14 days after you've purchased the item! Learn More
Same Day Shipping
Same Day Shipping
We promise to ship your order as fast as humanly possible. In fact, 99% of orders placed before 6 pm EST ship the same day! Learn More
Show: per page
Grid View Grid List View List
Sort by:
RO/DI Replacement Filter Kit

RO/DI Replacement Filter Kit

Kit Includes: 1 x 1 micron dual density gradient sediment filter 1 x 1/2 micron carbon block prefilter 1 x Color Indicating Mixed Bed DI Cartridge 1 micron dual density gradient sediment filter is highly recommended due to longer...

$40.49 $34.42
Captive Purity Hi-Silicate Removal TFC Replacement Membrane

Captive Purity Hi-Silicate Removal TFC Replacement Membrane

The key component for any reverse osmosis unit is its membrane. The membrane will determine the type of contaminants removed and how much water the unit will produce. Our Captive Purity Hi-S (High Silicate) membranes are the gold ...

From $28.49
SpectraPure® SilicaBuster Mixed Bed Multi Layer DI Cartridge

SpectraPure® SilicaBuster Mixed Bed Multi Layer DI Cartridge

DI-SB-10 SpectraPure® SilicaBuster™ Mixed-Bed Multi-Layer Deionization Cartridges are fabricated with semiconductor grade resins for highest possible purity water. They are capable of producing 18 meg ohm-cm resistivity water....

$26.99
SpectraPure® MaxCap DI Cartridge - Standard

SpectraPure® MaxCap DI Cartridge - Standard

DI-MC-10 SpectraPure’s MAXCAP® DI™ Replacement Cartridge is the Heart of the MAXCAP® Series of Products. When placed ahead of your existing DI cartridge, the life of your downstream DI cartridges will increase by four times or...

$29.99
SpectraPure® SilicaBuster Super DI Cartridge

SpectraPure® SilicaBuster Super DI Cartridge

SpectraPure® SilicaBuster™ Super DI™ Multi-Layer De-Ionization Cartridges are fabricated with the highest grade custom-blended resins for ultra-pure water. They are capable of producing 18 meg ohm-cm resistivity water. They are th...

$29.99
SpectraPure® SilicaBuster Color-Indicating Super DI Cartridge

SpectraPure® SilicaBuster Color-Indicating Super DI Cartridge

SpectraPure® SilicaBuster™ Super DI™ Multi-Layer De-Ionization Cartridges are fabricated with the highest grade custom-blended resins for ultra-pure water. They are capable of producing 18 meg ohm-cm resistivity water. They are th...

$29.99
SpectraPure® Standard 60-GPD TFC Membrane

SpectraPure® Standard 60-GPD TFC Membrane

SpectraPure® SpectraSelect™ Membranes are greater than 96% rejection Guaranteed! Hand picked and individually tested for consistent ultra-high rejection and treated with a proprietary process to further enhance rejection & product...

$41.99 $33.99
SpectraPure® Zeta-Zorb 0.2 Micron Absolute Rate Sediment Cartridge

SpectraPure® Zeta-Zorb 0.2 Micron Absolute Rate Sediment Cartridge

For the worst sediment challenged areas! FIVE time more dirt holding capacity than other Sediment Filters. 0.2 Micron absolute removal efficiency doubles the longevity of your carbon block filter, which protects the heart...

$34.99
SpectraPure® Mixed-Bed Color-Indicating Super DI Cartridge

SpectraPure® Mixed-Bed Color-Indicating Super DI Cartridge

SpectraPure® Mixed-Bed Resin Cartridges provide ultra-pure de-ionized water and are tested to 18 meg ohm-cm purity. 33% more removal capacity than other standard mixed-bed DI cartridges Proprietary High Flow, Low Pressure D...

$29.99
SpectraPure® SilicaBuster Mixed Bed Super DI Cartridge

SpectraPure® SilicaBuster Mixed Bed Super DI Cartridge

Resin resistivity tested to 18 meg ohms Semiconductor Grade Mixed-Bed Resin Cartridges Highest purity and quality Non color-indicating for lowest TOC Removes all ionized impurities Needs resistivity or TDS monitoring to...

$30.99
SpectraPure® Color Indicating Ammonia Removal DI Cartridge

SpectraPure® Color Indicating Ammonia Removal DI Cartridge

SpectraPure® Color-Indicating Ammonia Removal DI Cartridge is optimized for maximum ammonia removal in RO/DI systems. This deionizing cartridge also removes silica, heavy metals, nitrates and phosphates. For post R...

$26.99
This item is temporarily unavailable but will be back in stock soon.

Item #
Price:
Click the Add To Cart button below if you'd like to reserve this item today. Any other items included in your order will be immediately processed and shipped. We will ship this item separately as soon as it arrives. We will not charge you for this item until it ships and you will incur no additional shipping charges.

Enter your email address in the field below and click the Notify Me button if you'd like us to send you an email when this item becomes available. Although you will be immediately notified when we have stock on hand, we will not reserve any units for you; you must return to our website and place an order.

Your Email:
Just enter your email address below and we'll let you
know when the product you are looking for becomes available!

Item Code:
Price:
Your Email:
Marine Depot Newsletter Signup
Aquariums, News & Culture
Join 100,000+ readers who receive weekly tips, videos, deals and giveaways.