[Clever Forum Name]

What sort of TDS will these little beauts produce at.

TDS Is around 350PPM out of the tap

NON Pumped.

Cheers

[PoleKing]

The one I used to have was producing at single figures from a higher TDS.
Great little machines if they produce enough for your needs

[Clever Forum Name]

Its just a temporary measure really.

Just as a matter of interest the 100,200,300,450 GPD RO machines. Do they all use the same pre filters? Is it on the membrane on the top that is different ie more?

Can you change that membrane on the top?

[PoleKing]

Its just a temporary measure really.

Just as a matter of interest the 100,200,300,450 GPD RO machines. Do they all use the same pre filters? Is it on the membrane on the top that is different ie more?

Can you change that membrane on the top?

As far as I know, yeah, same filters.
I've only seen 150/300/450GPD systems.
150 has 1 little RO
300 has 2 little RO's
450 has 3 little RO's
I'm sure it's not as simple as that but it's what I've observed.
The filters are on ebay for about £20, all 3 of them.
The RO's (last time I checked, from memory) were about £30 each.
Like I say, great bit of kit, especially for the pennies.

[Clever Forum Name]

Awesome, yeah thats what i thought.

[DaveG]

I've got a 450gpd unit now.

It was a 200, but I added a housing and upgraded the membranes to 150gpd ones (with a bit of help from Doug at Daqua). I'm pretty sue all the pre filters are the same...

My tds from tap is around the same as yours (340ppm) and the RO (pumped)  gets it down to 14, which I'm more than happy with.

[Spruce]

If yours has a restrictor in the waste line, I would suggest you replace that with one suitable for 150 GPD membranes.

[DaveG]

I did that Spruce (under Dougs instructions) 

[Dave Willis]

me too 

However, I found the 150 membranes don't seem to last as well as the 100gpd ones. Something to do with them having to be wound tighter to fit the same housings.

[Clever Forum Name]

How often do the membranes get replaced them?

[DaveG]

Not sure, had mine in for around 8 months and still good... I'm producing 5/600 litres of pure  per day

[PoleKing]

How often do the membranes get replaced them?

Last 450 I had, I used it for 18 months doing 10,000l of pure a month and never changed the membranes!
I loved that system.

[Mike #1]

So lads how much water in litres would an 300gpd ro produce in litres say within an 8 hour period . Thanks Mike

[Clever Forum Name]

380 if pressure is good.

[Mike #1]

Cool that will do me after 18 months of a switch to double di from ro and i going back to ro sick of the messing on and cost involved of  di only . Thanks Mike