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Double DI


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Hiya guys. I've just taken delivery of my second di tank and just wanted to ask some advice.

When using one di vessel I would allow my tds to creep to 3 before throwing out the resin.

My tds is now at 3 as we speak.

Should I fill up my 2nd vessel with fresh resin now and connect it up or allow the first to reach a slightly higher tds first?

If it helps, my tds out of the tap reads around 47.



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I would let it get up to a level that you know it will start spotting if any higher

Where i am i would let it get to 11 ish knowing it won't spot if i was di only

Then swap and only change the resin when it reaches the same as your tap water or the second one reads too high

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