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RO/DI System

Find the Right RO/DI System

Answer a few quick questions to narrow down the best RO/DI system for your water source, tank size, and priorities.

Step 1 of 6

How is your tap water treated?

I'm on city water

This is the most common water source for our customers.

I'm on well water

Water that comes from a private well typically will not have disinfectants or other hard-to-remove contaminants.

I'm not sure

That is okay. We can still help narrow down the right RO/DI system.

Step 2 of 6

Do you know what your city uses to treat your water?

Chloramines

This is becoming increasingly common around the country.

Chlorine

More and more cities are moving to chloramines, making chlorine increasingly less common.

I'm not sure

Most people do not know the answer to this question, so that is totally fine.

Step 3 of 6

Which is most important to you?

A lower cost RO/DI system to get started

Bulk Reef Supply RO/DI systems are easily expandable later.

A balance of cost and performance

This is the better choice in a good, better, best lineup.

The most efficient filtration

You want the highest level of efficiency, even if the up-front cost is a bit higher.

Step 4 of 6

Do you want to reduce wastewater when making RO/DI water?

Yes, I want to minimize waste water

  • Slightly higher cost
  • Make filtered water faster
  • Produce less waste water

I'm okay with a standard system

  • Lower cost
  • Make filtered water slower
  • Produce more waste water
Step 5 of 6

Which option sounds better to you?

A system that helps you monitor performance and water quality (highly recommended)

  • Pressure gauge to monitor PSI for optimal membrane performance
  • Flush valve to maintain your RO membrane before and after use
  • TDS meter to monitor the quality of the water your system is producing

A system with no monitoring, but at a lower cost

You are okay giving up some features if it means saving some money.

Step 6 of 6

Which Gallons Per Day (GPD) rating sounds best for your needs?

75 Gallons Per Day

A great fit for most hobbyists who do not mind a slower production rate.

100 Gallons Per Day

A step up in production for single membrane systems.

150 Gallons Per Day

A strong Water Saver option for faster production and less waste water.

200 Gallons Per Day

Our highest output option in a Water Saver setup.

Recommended RO/DI System

5 Stage Standard 75 GPD RO/DI System

This system path is the best match based on your answers.

  • Recommended stage count based on your water source and priorities
  • Standard or Water Saver membrane configuration based on your answer
  • Standard or Plus configuration where applicable
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System Features

Configuration Details

This recommendation is based on your stage count, membrane configuration, and feature preferences.

Plus systems include a pressure gauge, TDS meter, and manual flush valve.

Only 4 and 5 stage systems are available in non-plus versions. All 6 and 7 stage systems are Plus.

Helpful Upgrades

Optional Upgrade: Booster Pump Kits

A booster pump can be a smart add-on for any RO/DI system, especially if your incoming water pressure is below 50 PSI. It can help improve membrane performance, increase water production, and support longer DI resin life.

Optional Upgrade: Drinking Water Add-On Faucet

Add a household drinking water faucet to your RO/DI system for clean, healthy drinking water on demand.