Feedback on this product

  • Thread starter Thread starter kiwis
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Sorry, I'm seeking some feedback on how good this product is. Price seems very reasonable.
 
That’s a 95% rejection rate membrane. Do you know what your incoming TDS is?
 
That’s a 95% rejection rate membrane. Do you know what your incoming TDS is?
I've never tested it before, I'm in Auckland, New Zealand I've read reports of anything between 35 and 55 but not idea if this is true
 
I had a feeling you were in New Zealand based on the name. I’ve been once before and really liked it. One of the few work trips when I actually had time to explore a bit.

I was there seeing Peter Beck at Rocket Lab before they were a big deal :)


DI cartridges can take out about 2000 TDS total. At 116 TDS here’s how long DI would last you (round about):

333 gallons at 95%
575 gallons at 98%

That 3% rejection really adds up quickly. That turns into a 58% loss in capacity.
 
I had a feeling you were in New Zealand based on the name. I’ve been once before and really liked it. One of the few work trips when I actually had time to explore a bit.

I was there seeing Peter Beck at Rocket Lab before they were a big deal :)


DI cartridges can take out about 2000 TDS total. At 116 TDS here’s how long DI would last you (round about):

333 gallons at 95%
575 gallons at 98%

That 3% rejection really adds up quickly. That turns into a 58% loss in capacity.

Yeah NZ is a cool place, could live anywhere else.

Why would it last longer at 98%?

Either way, I'll be needing 20L a week so will last 12-14 months which is a good time. More interested to know if this will give me good water quality.
 
So 98% removed it lasts longer? I don't get it. I thought that would work harder and last less.
The 98% number is how much TDS is removed by your RO membrane. Any TDS not removed by the RO needs to be removed by the DI.
 
The one in the first link looks like it has a horizontal inline DI cylinder. These are not the most efficient DI stages as the RO water tends to channel through the media. Look for an RODI unit with a DI stage in the standard canister, like the canisters for the prefilters. Water will flow more evenly through these style of DI canisters utilizing all of the resin evenly.

Not a fan of the second unit linked as it appears to use all proprietary filtration cartridges which will each cost more, significantly adding to the total expense over the lifetime of running the unit.
 
The one in the first link looks like it has a horizontal inline DI cylinder. These are not the most efficient DI stages as the RO water tends to channel through the media. Look for an RODI unit with a DI stage in the standard canister, like the canisters for the prefilters. Water will flow more evenly through these style of DI canisters utilizing all of the resin evenly.

Not a fan of the second unit linked as it appears to use all proprietary filtration cartridges which will each cost more, significantly adding to the total expense over the lifetime of running the unit.

So this is better?
https://www.trademe.co.nz/Browse/Listing.aspx?id=1882676228
 
That still looks like the DI stage is a horizontal inline. You could see it hooked up on top of the RO housing.
 
Oh Horizontal.... read that as vertical for some reason.

So far from here and on facebook groups I've questioned about 10-12 units. All have faults.

Can someone recommend a good unit?
 

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