RO info please

[Clearblue303]

Someone who has one,can explain me the principle of the device?
All I know is that the water is forced through a membrane and there are 2 recipients.Is it used the tap/w pressure?Do you have to change the membrane(how often)?Is it made of rubber,or something special?
Can you give as much explanations as possible?
Is it better than the tap/w purifier and why?
Thanks.FM.

 

[jaydse]

hello the thing that sold me on getting one is go to the aqua fx site look for all the stuff a r/o takes out of the water .i haven't noticed a big differance yet in my reef but in my fish only tank filled with r/o only no alge!