RODI question

[blabay]

I purchased a 4 stage 75 gpd RODI unit from BRS about 4 years ago. I made about 30 gallons with it and haven't used it since. (Long story)
Anyway, I'm ready to get back into the hobby now and was wondering if I need to replace all the filter media or, if I still get close to 0 tds, can I continue to use it?

 

[Pistondog]

I would, but someone may say why it's a bad idea.
Maybe mold growth inside the filters?

 

[Auquanut]

I personally would replace everything and check the seals. The unit itself should be fine, but 4 years is a long time. better safe than sorry.

 

[theMeat]

It’s likely fine. Run it for 10 minutes then test tds, see what you got