Re: [Killietalk] Re: R/O Question

[LeeH920226 at aol_com]

For my situation, where the tap water ranges between 170 and 240 ppm TDS, I 
use the "waste water" for all fish, except the few that require very low TDS (I 
also use rain water when it is available for this purpose). So, for example, 
when the tap water is 200 ppm, the "waste water" is about 220 ppm, which is 
still lower than what it is in the tanks where I am using it for replacement. 
Currently the "waste water" goes into a barrel for storage (after going through 
a carbon filter for dechlorination), or it goes into my flow through system, 
depending on how I turn the valves. The RO water (about 35 ppm) passes through 
a mixed bed deionizer/carbon filter (Aquarium Pharmaceuticals) that reduces it 
to less than 10 ppm and lasts a long time, since it is not removing much.

Lee Harper
Media, PA
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