RO/DI Water - Question

[jpc763]

I have a 5 stage RO/DI system from Bulk Reef that runs 24x7 and fills up a rubbermaid 30g can. I have had it for a couple of years and I have a dual inline TDS meter. The reading on the meter is about 41 going in and 0 coming out. I have a pump in the bottom of the can with a tube coming out that I use to pump water out. It is in there all the time.

The question is about the resulting water. When I grab the tube to pump the water out, it feels slippery. Is that normal?

Thanks, John

 

[Craigar]

Every once in a whole you need to give your holding tanks a vinagwr bath and rinse them out. Even with no tds water your still going to get contaminants in it!

 

[jpc763]

Got it. Thanks!

 

[jahmic]

Yea, after time mold and bacteria can still find its way into those containers. That sliminess is most likely a bacteria bio-film coating your tubing and the bucket. By running the water through the RO/DI, you strip chlorine out of the water...which is added by the water treatment plant to keep bacteria from growing.

I rotate buckets for my RO/DI and each 4-6 weeks one just sits in the sun for a couple days to kill anything in there, then gets a good rinse. A good vinegar bath, as Craig suggested, is probably an even better option. But yea...once you get that film going it's time for a cleaning.