BRS 4-Stage 75 GPD RO/DI System
BULK_REEF_SUPPLY_AQUAFX_4_5_STAG
The Bulk Reef Supply 4 Stage Value 75 GPD RO/DI System lets hobbyists produce purified reverse osmosis / deionized water at home for both saltwater and freshwater aquariums. Representative of...
Or build it into a bundle — save up to 6% ↓What it is, and who it is for.
The Bulk Reef Supply 4 Stage Value 75 GPD RO/DI System lets hobbyists produce purified reverse osmosis / deionized water at home for both saltwater and freshwater aquariums. Representative of this 4-to-5 stage 75 GPD family, the 4-stage build runs water through a 5 micron sediment filter, a BRS VOC carbon block, a 75 GPD Dow Filmtec RO membrane, and a color-changing mixed-bed DI resin for up to 96-99% contaminant rejection. It produces approximately 75 gallons of purified water per day at a roughly 3:1 waste-to-product ratio.
Build around the BRS 4-Stage 75 GPD RO/DI System.
It's already in your system below. Add the flow, filtration and dosing around it and the discount starts working — tiers climb as the build grows, and the reef meter fills with it.
Pick the right one, not the biggest one
The honest line-up from ato & ro/di. Most buyers reading this page should buy the middle column.
BRS 4-Stage 75 GPD RO/DI System
BRS 4-Stage 75 GPD RO/DI System
BRS 5-Stage 75 GPD RO/DI SystemAsked before checkout
The questions our support inbox actually gets.
Does it ship quickly?+
Orders placed before 2 PM ET on a business day leave the same day. Tracking is emailed the moment the label prints.
What if it's the wrong fit for my tank?+
Return it. 30 days, no restocking fee, refund to the original payment method. Better: tell us your tank first and we'll spec the system for free — half of all returns are sizing problems.
Who handles the warranty?+
We do. Everything carries the manufacturer's warranty and we run the claim for you — one email to us instead of a ticket queue.
How does the bundle discount work?+
Add items in the bundle builder: 2+ items saves 5%, 3+ saves 8%, 4+ saves 12%, and 5+ saves 15% off the whole system, applied at checkout.