New filters installed in RODI system, but...

[Dom]

I just installed new filters and membrane into my BRS 5 stage RODI system. I've also installed an in line TDS meter.

Currently, it is reading 6.

How many gallons of RODI do I have to make before I can expect to see that number drop to zero?

This is a bit distressing since the OLD media was putting out a TDS of 2.

 

[Hitman]

If memory serves me right you need to push 10 to 20 gallons or so to flush everything out. I have the BRS 150 gallon 7 stage pro plus and I just put the hose in the drain and let it run for a few hours.

 

[Jay Z]

I’ve noticed the same on mine. Around 1-2 hour flush time.

 

[Dom]

As I mentioned in the OP, my old filters were giving me TDS of 2. The effect of a 2 TDS weren't terrible, however I did notice a slight uptick in algae growth on the glass.

So once it hit 2, I started saving the water. Eventually it dropped to 1 and I expect that zero is not far behind.

Thank you for the response.

 

[Hitman]

As I mentioned in the OP, my old filters were giving me TDS of 2. The effect of a 2 TDS weren't terrible, however I did notice a slight uptick in algae growth on the glass.

So once it hit 2, I started saving the water. Eventually it dropped to 1 and I expect that zero is not far behind.

Thank you for the response.

What is your incoming tds? I have 95 going into the unit, 2 coming out of the second membrane into the first stage of di, 0 going into the second di stage and 0 obviously going out the third di stage.

 

[Jay Z]

As I mentioned in the OP, my old filters were giving me TDS of 2. The effect of a 2 TDS weren't terrible, however I did notice a slight uptick in algae growth on the glass.

So once it hit 2, I started saving the water. Eventually it dropped to 1 and I expect that zero is not far behind.

Thank you for the response.

Whats your psi running to it?

 

[Hitman]

^^^ good point

 

[Jay Z]

^^^ good point

Just went through this too. Have the same setup as Hitman and just changed out all the filters/resin. At 55-60 psi I was getting 2 tds before my di (stage 4), zero after the 5th stage. Put a booster pump on it, now I'm getting zero out of the 4th stage, according to the tds meter.

 

[Hitman]

I have 90 psi on my set up. Before I turned the pressure up I had the same issue

Just went through this too. Have the same setup as Hitman and just changed out all the filters/resin. At 55-60 psi I was getting 2 tds before my di (stage 4), zero after the 5th stage. Put a booster pump on it, now I'm getting zero out of the 4th stage, according to the tds meter.

 

[Dom]

What is your incoming tds? I have 95 going into the unit, 2 coming out of the second membrane into the first stage of di, 0 going into the second di stage and 0 obviously going out the third di stage.

I just finished putting together a water station and replaced all filter media. I have installed an in line TDS meter where the tank water comes out. It reads 1 there. I never concern myself with what is going in as that is the filter's job. If I am not getting zero coming out, something is wrong.

How does pressure going in effect TDS coming out?

 

[Jay Z]

I just finished putting together a water station and replaced all filter media. I have installed an in line TDS meter where the tank water comes out. It reads 1 there. I never concern myself with what is going in as that is the filter's job. If I am not getting zero coming out, something is wrong.

How does pressure going in effect TDS coming out?

pushes more water through the membranes