How many gallons do you waste???

[SPSjunky]

Im getting ready to change the filters and membrane in my ro/di unit.Someone told me I should dump the first 50 gallons of water I make.When you guys change your filters do you dump out "x" number of gallons???

 

[kschweer]

I never really heard of a specific number of gallons to be discarded but I have heard to let the unit run for about an hour after replacing the membrane. Not sure if the same applies for other cartridges.

 

[lsaint88]

When I got mine it told me the first 30g when you replace the Membrane

 

[redfishbluefish]

I'm still working on my first membrane....four years plus....and I have an in-line tds meter...two probes....one after RO and one after DI.

If I'm getting zero tds, I'm collecting water!

 

[mfinn]

Why waste any of it. With new filters and membrane, the rodi should be working at it's best.

 

[SPSjunky]

Why waste any of it. With new filters and membrane, the rodi should be working at it's best.

Thats exactly what i was thinking.Maybe dump the first 5 gallons incase of dust or anything like that.The reason I ask is i was approached my a guy when i was just buying my new filters and membranes and I quote "Dont forget to dump the first 50 gallons!". And it got me thinkin......