Welcome to Purely H2O!

This weeks super Value Upgrade any 75 gpd automated system To 100 GPD Membrane For Only $4.00

Optima professional RO/DI System Only $175.00!!!

The Optima Professional Aquarium RO/DI system truly has it all. This Reverse Osmosis Filter system Designed specifically for the needs of Aquarium Saltwater Reef Hobbyists.

***Upgrade to 100 GPD Membrane For Only $4.00***

Bio Pellet Reactor Combo pack Only $78.99!!!

Designed to be easy to use, setup and maintain. This Combo Pack includes 450ml of Dr. Tim's NP-Active Pearls Bio Pellets to service up to 160 gallon aquarium.

MBD-30 Di resin Only $19.95!!!

2 lb. Color Changing Nuclear Grade DI Resin. We recommend the color changing resin because it gives you an idea of when to start checking your TDS meter more often.

Optima CA ELITE RO/DI System oNLY $209.00 !!!

The Optima C/A was designed to handle the newest trouble issue reefers face today, Chloramine. Also due to popular demand we have added all the features of the Optima Vision, Pro and Automated into one Amazing system, we call the Optima Chloramine Advanced! ***Upgrade to 100 GPD Membrane For Only $4.00***

Reef Maxx GFO DUAL Media Reactor Only $44.95!!!

The Reef Max Dual Media reactor is perfect for utilizing Dr. Tims NP-Active Pearls and GFO in the aquarium. Customers really like the easy setup and the ability to change out media with out having to mess around with things like thumbscrews or snap on lids that always seem to leak..

PhosBan® 1 LB bulk Only $22.00!!!

PhosBan® Julian Sprung's Marine Aquarium FormulaSynthetic ferric oxide hydroxide granules with an extremely high capacity for adsorbing phosphate from saltwater and freshwater.

Aquatec Permeate pump Only $65.00!!!

Upgrade your RO or RO/DI Filter System - Increase Efficiency and Save Water.

100 gpd residential ro membrane with 100 gpd flush kit Only $42.00 with free shipping!!!

Our 100 GPD membrane fits most standard residential style membrane housings. Includes 100 GPD Flush Kit!!! ***SHIPPING INCLUDED***

Purely H2O offers the finest and most high tech water treatment systems available today. We also custom build systems to suit your needs. If you have a problem unique to your water supply we can put together a system designed just for you! There are many different water issues all over the world and one system cant handle them all. If you have a water issue that you are unsure of give us a call and we will put together a system specific to your water. We also stock a wide variety of water testing devices such as Nitrate meters, refractometers, TDS meters, Ph meters, thermometers and much more! If you are looking for something you dont see on our site give us a call and we will get it if we dont have it already. Not sure what you need? Dont guess, give us a call! We can help you figure out what filters fit your system or what system is best for you. We will do our best to make sure you are happy with your purchase.