ro/di filter any good?

jpa0741

jpa0741

Member
ro/di from big

[hr]
site do not work very well. I had one for a year, then when I ordered new filters I bought a TDS meter and found it was still 30 tds.
 
eaglewonj

eaglewonj

Member
Originally Posted by jpa0741
ro/di from big

[hr]
site do not work very well. I had one for a year, then when I ordered new filters I bought a TDS meter and found it was still 30 tds.
wouldn't that depend on what brand?
 
acrylic51

acrylic51

Active Member
What kind and brand of membrane and how big.......There is a difference between the membranes.....You'll see some that just says Filmtec and some that say Dow Filmtec.....Size of membrane also plays into factor as well.....75gpd and less have a better rejection rate as opposed to a 100gpd membrane......
 
eaglewonj

eaglewonj

Member
Originally Posted by acrylic51
What kind and brand of membrane and how big.......There is a difference between the membranes.....You'll see some that just says Filmtec and some that say Dow Filmtec.....Size of membrane also plays into factor as well.....75gpd and less have a better rejection rate as opposed to a 100gpd membrane......
Precisely. I have seen models that use two 75's so they get the good rejection rate. Also check the pressure they rate it at and compare that to your home pressure....
 
acrylic51

acrylic51

Active Member
Originally Posted by eaglewonj
wouldn't that depend on what brand?
What do you mean wouldn't that depend on the brand?
 
acrylic51

acrylic51

Active Member
Originally Posted by eaglewonj
Precisely. I have seen models that use two 75's so they get the good rejection rate. Also check the pressure they rate it at and compare that to your home pressure....
Sorry must have been posting at the same time......Even if there is a difference in pressure that can be overcome......Alot of things factor into the amount of "good" water a unit will produce from: water temp coming into the unit, quality of water coming into the unit, water pressure and so on.......With that being said if you water pressure is low, you can install a booster pump to get you within the prescribed or best operating pressure for the unit.....The booster pumps come with a pressure regulator switch that can be adjusted......
 
acrylic51

acrylic51

Active Member
Sorry again, but out of curiousity, why do some people opt for 100gpd units? You'll still have to wait for water and do we honestly need that amount of water at any 1 given time?
 
eaglewonj

eaglewonj

Member
Originally Posted by acrylic51
Sorry must have been posting at the same time......Even if there is a difference in pressure that can be overcome......Alot of things factor into the amount of "good" water a unit will produce from: water temp coming into the unit, quality of water coming into the unit, water pressure and so on.......With that being said if you water pressure is low, you can install a booster pump to get you within the prescribed or best operating pressure for the unit.....The booster pumps come with a pressure regulator switch that can be adjusted......
Oh no disagreement, but if it needs higher pressure than you have and you don't give it that it won't work as well. There are 75 gpd membranes that work at normal household pressure (50psi?) and others that need 65 psi to do the same thing
 
eaglewonj

eaglewonj

Member
Originally Posted by acrylic51
Sorry again, but out of curiousity, why do some people opt for 100gpd units? You'll still have to wait for water and do we honestly need that amount of water at any 1 given time?
Not sure, but a LFS may want a lot of water so they can run their operation or sell it. So the system with 2 100 gpd would offer 200 gallons. There are also massive commercial systems....its all up to how long do you want to wait. A 100 gallon per day system could give you 5 gallons of topoff water in a little over an hour...where a 25 gpd system would take almost 6 hours. If you don't have a storage tank and float valve, it is less time to spend watching the system. I would just use the 75 and float system to fill a holding tank.
 
acrylic51

acrylic51

Active Member
Wasn't disagreeing.......
The unit will still operate correctly just not at it's max efficiency......IMO they should all be boosted to 60psi........Again it could just come down to quality of the membrane installed.....If you look at the ones on the Spectrapure site, the test guaranteed.....they produce, but look at the price......Again I'll stick by my claim of Dow Filmtec membranes.......
 
acrylic51

acrylic51

Active Member
Originally Posted by eaglewonj
Not sure, but a LFS may want a lot of water so they can run their operation or sell it. So the system with 2 100 gpd would offer 200 gallons. There are also massive commercial systems....its all up to how long do you want to wait. A 100 gallon per day system could give you 5 gallons of topoff water in a little over an hour...where a 25 gpd system would take almost 6 hours. If you don't have a storage tank and float valve, it is less time to spend watching the system. I would just use the 75 and float system to fill a holding tank.
I agree, but that LFS that is selling that water IMHO isn't giving the customer the best water quality........I agree 75gpd with holding system.....I use my 6 stages that's been modified madly and pump it to my Rubbermaid.......
 
eaglewonj

eaglewonj

Member
Originally Posted by acrylic51
What do you mean wouldn't that depend on the brand?
Well the comment looked like it was saying that all ro/di from the big

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site are bad. But there are several brands on there. They can't all suck just because they are sold on the big

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site...does the same brand in a store magically work better? NO. If Kent is good then it is good, just because it is on an

[hr]
site doesn't mean it sucks. Certain brands may be horrible, so don't buy them, but the quality of the ro/di unit should depend on the brand, not where it is bought.
 
eaglewonj

eaglewonj

Member
Originally Posted by acrylic51
I agree, but that LFS that is selling that water IMHO isn't giving the customer the best water quality........I agree 75gpd with holding system.....I use my 6 stages that's been modified madly and pump it to my Rubbermaid.......
What's the 6th stage btw?
Originally Posted by acrylic51
Wasn't disagreeing.......
The unit will still operate correctly just not at it's max efficiency......IMO they should all be boosted to 60psi........Again it could just come down to quality of the membrane installed.....If you look at the ones on the Spectrapure site, the test guaranteed.....they produce, but look at the price......Again I'll stick by my claim of Dow Filmtec membranes.......
I agree Dow vs. Dow like. DOW it is. My dad has heard good things about dow membranes in industrial applications, i'll trust them for my little tank.
 
acrylic51

acrylic51

Active Member
I agree Eaglewonj......I wasn't implying all suck.....I know of one unit the Typhoon models that are sold are excellent units and advise people all the time looking for units to search Walter out on this site.....He knows his business when it comes to filtration.........I don't think you'll find any or very few dissatisfied customers of his.......Again there are several that try to imitate, but short people.....
 
acrylic51

acrylic51

Active Member
Dow!!!!!!!! Dow Filmtec membranes......
The 6 stage started originally as a Kent, but through major mod, custom made bracket, pressure vessel upgrade, along with membrane change out from 35gpd to 75gpd, addition of dual 5micron, and 1 micron sediment filters, 2 carbon filters, and Hi S DI filter, Dual TDS meter and gallonage meter to let me know how many gallons I'm getting on filter life......I got bored for a bit........
 
eaglewonj

eaglewonj

Member
Originally Posted by acrylic51
Dow!!!!!!!! Dow Filmtec membranes......
The 6 stage started originally as a Kent, but through major mod, custom made bracket, pressure vessel upgrade, along with membrane change out from 35gpd to 75gpd, addition of dual 5micron, and 1 micron sediment filters, 2 carbon filters, and Hi S DI filter, Dual TDS meter and gallonage meter to let me know how many gallons I'm getting on filter life......I got bored for a bit........
good lord man (or woman)!
 
alfieferenzo84

alfieferenzo84

Member
you all having fun lol
anyways there on e.b.a.yitemnumbers below i dont know if your allowed to do this but yeah the item numbers are
6 stage drink 160066683838
6 stage 2 di 160066684259
then he sells some that claim zero tds i just want a good ro/di unit to remove ammonia and nitrates out of my water i really could careless about the other stuff, i dont want to spend really over a 100 for a system so that is why i cant get the better ones all though i was thinking about the coralife ones but i figured with all the extra filters and cheap it shoudl do about the same!
I sent the guy a email he said they waste about 4-5 gal per 1 gal made witch sucks also its out of the usa but there are other cheap ones on there i just dont know what to do but i know i need to do sumthing as my tap water filter is done and i need water!!
My tank is a fish only with messy eatters and the nitrates are killing me so i figure with source water being 30 it dont help the tank lol just let me know thanks
 
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