Subject: RO/DI choice
From: "Pszemol"
Date: 7/1/04 12:24 AM Eastern Daylight Time
Message-id:

"Racf" wrote in message
...
You should read up on the technology a bit...especially the mixed bed DI
part. It has drawbacks and cost mucho over the long haul.....

What are the drawbacks of using mixed bed DI resins?

You probably can't recharge them. Typically, a heavy metal remover such as
Kent's toxic metal sponge can be recharged with muriatic acid whereas an
organic scavenger like seachem's hypersorb can be recharged with bleach. Once
you mix them, you can't recharge them anymore and will just have to eat the
cost of replacement whenever they get exhausted.

Personally, I just fill a clean trashcan with tapwater then dechlor and heat it
to temp. I filter it with a high grade carbon and phosphate remover along with
toxic metal sponge and hypersorb in a cannister filter. That way half the water
doesn't go down the drain as with an RO unit and I can recharge my resins
unlike with a mixed bed DI unit.

-M333