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DI Vessel question. Help Needed.


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I've used a RO System for the last year without di vessels as it comes out pretty pure, only a couple off 000.

But it uses a lot of water as it's only the 300GDP (lies) system.

Now, I know some people here only use DI vessels as their water from tap isn't full of too much rubbish, and I was debating trying it, the tap water is around 130ppm.


Today I ran it straight through the DI Vessel as was rushing and it got me thinking.

Granted the resin will need replacing more, but at the same time, I'll be saving money on the water bills, as I'm using FAR LESS water to purify, no waste water.


Is it worth it? As I don't know how long resin will last on its own.


Help needed. Thanks.

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It depends on how large the DI vessel,I'm DI only and use 1.1 L DI vessel my TDS is between 12-40 ppm and change my resin about 4-5 months so costs me about £100 a year in resin.You may have to change your resin 6 weeks but if you run it through two vessels in sequence you will save money I know cyberpez does this.It all depends on how much you pay for water.Maybe rain water harvesting could help.

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Guest colinvansmith



Follow this link there is a resin calculator here on gardiners website, very handy, based on resin costing £75 per 25litres, using 250litres a day 5 days per week, with your ppm at tap 130ppm it will cost you £88 per month for resin, Two 11litre di vessels inline is the key to making it last and saving you money

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