Reverse Osmosis Filters & Media
We stock a full line of replacement reverse osmosis filters, filter kits, carbon blocks, membranes and deionization resin at affordable prices. All of our filters are produced by American companies with American water quality standards. These trusted brands include: Dow, GE water technologies, MATRIKX, Pentek and Purtrex. All the filters we carry are certified by NSF.
For proper tank maintenance, Bulk Reef Supply recommends changing the filters in your RO/DI System every 6 months. To make re-ordering a breeze, we have created filter kits to match all of our value, standard, chloramines and drinking water systems.

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GE Water Technologies2.5" x 10" Purtrex Depth Sediment Filters - GE Water Technologies
Starting at: $3.99
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Bulk Reef SupplyPRO Series Cation DI Resin (Color Changing) - Part 1 - Bulk Reef Supply
Starting at: $16.49
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Bulk Reef SupplyPRO Series Anion DI Resin (Color Changing) - Part 2 - Bulk Reef Supply
Starting at: $15.99
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Bulk Reef SupplyPRO Series Mixed Bed DI Resin (Color Changing) - Part 3 - Bulk Reef Supply
Starting at: $16.99
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GE Water Technologies4.5" x 20" Aquatrex Depth Sediment Filters - GE Water Technologies
Starting at: $63.99
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GE Water Technologies2.5" x 20" Purtrex Depth Sediment Filter - GE Water Technologies
Starting at: $13.49
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GE Water Technologies4.5" x 10" Aquatrex Depth Sediment Filters - GE Water Technologies
Starting at: $26.49