Cheap r.o.???

bgmike8

bgmike8

Well-Known Member
Is there a good under sink r.o. system that anyone can recommend?

I've seen some around 50$ at walmart but I don't know if they are any good. My ppm of tap water is 500 - 600
 
rkymtnman

rkymtnman

Well-Known Member
walmart has my RO system. buy the water at 37 cents a gallon from them. they they have to replace all the expensive filters
 
Mr.Goodtimes

Mr.Goodtimes

Well-Known Member
In my old place was 250-500 depending on the river and flooding. I got 0 ppm with their 150 Gpd portable system. I think I replaced the filter every year or so, whenever the ppms would start sneaking up.

At my current spot I'm @ 180ppm tap, I upgraded my filter to 300 gpd, so I get 0ppm out. I use it a LOT more so change filter every six months
 
Gregor Eisenhorn

Gregor Eisenhorn

Well-Known Member
I bought a cheap 75 GPD unit, and it filters my 250ppm water to 4-8ppms (at the beggining I was shocked by the pureness of it, I thought I was going to end up with 30ppms). The only drawback is that it takes 2h to fill up 18l (which is what I use in about a weeks time, 11l for the start and then the remaining 7l for topping up), but I have a single 5gal DWC reservoir, so that's fine by me.

OP it depends how many reservoirs you have (if doing hydroponics) and the hardness of your initial water.
 
SamsonsRiddle

SamsonsRiddle

Well-Known Member
rkymtnman said:
walmart has my RO system. buy the water at 37 cents a gallon from them. they they have to replace all the expensive filters
Click to expand...
last few times i got ro water from them they were at 125, 110, and 155 ppms (.5 scale) respectively. I even checked the "filter maintenance date" on the fucking machine and it was the day before. fuck them.
 
bgmike8

bgmike8

Well-Known Member
I gotta get something next grow. I'm lugging 20 gallons in every week trying not to be suspicious. It's a real bitch
 
dandyrandy

dandyrandy

Well-Known Member
I bought a unit from fleabay. $150 with a free filter change set. Gage and all. 500 ppm going in .20 out. Quick turn around. Filter set is $57 change it once a year.
 
I

Itex250

Active Member
I sold and made RO Systems for years, one possibility is to rent an ro from Culligan, ecowater or any other large water treatment companies they will rent for about 20-$45.00 per month, production should be around 20-50 gallons per day, though this is dependent on influent temperature and membrane type , and of course tds. The dealer should be able to give you a good idea of what production averages from his units. The dealer normally includes maintenance on the units
Have also seen ro units available from big box retailers ,Sears(expensive), home depot, sams, lowes, these units can sometimes be some really good deals if you are handy with tools and comfortable around plumbing.Look for a TFC membrane, this is the best you can buy but it has some limitations , IT CANNOT BE EXPOSED TO CHLORINE , OR CHLORAMINES which are used to disinfect your water. Chlorine and other oxydizing compounds will tear up a tfc membrane in short order, and since there is no disinfection ,the membrane vessel can be come contaminated with bacterial growth. In a tfc system you must have a SOLID BLOCK CARBON FILTER BEFORE THE MEMBRANE.
Before the solid block you must have a 5 micron string wound or other material filter, do not use paper , these are cheap and usually only good for about a couple of weeks.......To Be Continued
 
b4ds33d

b4ds33d

Well-Known Member
Itex250 said:
I sold and made RO Systems for years, one possibility is to rent an ro from Culligan, ecowater or any other large water treatment companies they will rent for about 20-$45.00 per month, production should be around 20-50 gallons per day, though this is dependent on influent temperature and membrane type , and of course tds. The dealer should be able to give you a good idea of what production averages from his units. The dealer normally includes maintenance on the units
Have also seen ro units available from big box retailers ,Sears(expensive), home depot, sams, lowes, these units can sometimes be some really good deals if you are handy with tools and comfortable around plumbing.Look for a TFC membrane, this is the best you can buy but it has some limitations , IT CANNOT BE EXPOSED TO CHLORINE , OR CHLORAMINES which are used to disinfect your water. Chlorine and other oxydizing compounds will tear up a tfc membrane in short order, and since there is no disinfection ,the membrane vessel can be come contaminated with bacterial growth. In a tfc system you must have a SOLID BLOCK CARBON FILTER BEFORE THE MEMBRANE.
Before the solid block you must have a 5 micron string wound or other material filter, do not use paper , these are cheap and usually only good for about a couple of weeks.......To Be Continued
Click to expand...
damn good info man. are there any you suggest?
 
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