OZ REEF

Search
Quick Tips
Starfish Regeneration

A complete new starfish can grow from a small fragment. With some species one of the arms will literally pull itself away from the body and regenerate.

 
Main Menu
Home
Equipment
Journal
Gallery
Library
FAQ
DIY Plans
DIY Links
Personal
Search
Site Map
Ask A Question
Support
Finding information here useful? Any financial support to assist with bandwidth expenses is appreciated. Using PayPal you can ...
Visitors: 4791075
DIY Links
Random
Chiller 
Common Sized Aquariums 
Wiring Diagram for 4 x 28W or 32W Bulbs 
Bilge Pump (Diaphram) 
Simple Photometer Part 3 
Wiring Diagram for 2 x 28W or 32W Bulbs 
Industrial Adhesives and Cements Selection Guide 
Protein Skimmers 
Scraping, Cleaning and Building 
Trace Element Doser (OZ REEF) 

Home arrow FAQ arrow Starting Out arrow What is RO, DI and RO/DI water?

What is RO, DI and RO/DI water? PDF Print

The abbreviation RO stands for Reverse Osmosis and DI is short of De-Ionisation, which are both techniques of purifying, removing the impurities from, tap water so that it is suitable for use in a marine aquarium.  RO/DI is using both techniques, first RO then DI, to obtain the water.  RO by itself has difficultly removing some of the ions from the water, so typically that treatment is followed by DI to ensure the last lot are removed.

The difference between RO and DI water is the technique used to remove the impurities/ions. RO uses a semi-permeable membrane which is fine enough so that essentially only water molecules will pass through it. As a result you produce about 3 times as much waste water as purified water. DI uses ion exchange resins, which exchange the ions in the water, such as iron, magnesium, copper for hydrogen and nitrate, sulphate, phosphate for hydroxide. DI is fine to use, and if done correctly is better quality than a straight RO system (without a DI on the end).

Comments


Write Comment
  • Please keep the topic of messages relevant to the subject of the article.
  • Personal verbal attacks will be deleted.
  • Please don't use comments to plug your web site. Such material will be removed.
  • Just ensure to *Refresh* your browser for a new security code to be displayed prior to clicking on the 'Send' button.
  • Keep in mind that the above process only applies if you simply entered the wrong security code.
Name:
E-mail
Homepage
Title:
Comment:

Code:* Code

Powered by AkoComment!

 
Next >
New Articles
Most Popular Articles