Need Prime when running RO/DI

[shrimpchips]

Originally Posted by Palmer

Hi everyone,

I am filling my new tank with RO/DI water (over the next week.....) and was wondering if I need to use something like Prime to de chlorinate. I have used Prime for years on my fw tanks and had not added it so far to the RO/DI water I am putting into the SW tank. It is supposed to remove ammonia, chlorine, and chloramine. Ammonia will be handled by the cycling process but are the other two removed by RO/DI?

thanks,

Palmer

The chlorine and chloramine and many other chemicals are taken care of by the carbon cartridge before the RO membrane - chlorine can severly damage a RO membrane for example, so the initial carbon filtration helps with that. Metallic ions, etc are usually taken out by the membrane and by the DI resin after the RO membrane, hence you don't need Prime.