ro/di suggestions
- Thread starter isistius
- Start date
barngeatbayman
Premium Member
check out the filter guys a sponsor of this website great product great price!!!
I use the ones from AirWaterIce-com Never used the other brands except for the kent. I have the "compact reefkeeper" from that link. It's a 4 stage unit, 75gpd, built in auto shut off valve, clear sumps, replaceable elements, all theplumbing you need and a digital TDS meter. I think it was $129. Service was great. I got word of them from a few local reefers in our club. Several of us have this unit and have yet to have a problem.
BeanAnimal
Premium Member
Also check
buckeyefieldsupply.com
spectrapure.com
thefilterguys.biz
purelyh20.com
Any of those companies will provide you with honest answers and fit you with the best unit for your needs.
Stay away from the eBay vendors, as there are just too many problems and shortcuts taken with the materials and quality of the units. You are not going to save anything in the long run, evne though the purchase price looks very attractive.
buckeyefieldsupply.com
spectrapure.com
thefilterguys.biz
purelyh20.com
Any of those companies will provide you with honest answers and fit you with the best unit for your needs.
Stay away from the eBay vendors, as there are just too many problems and shortcuts taken with the materials and quality of the units. You are not going to save anything in the long run, evne though the purchase price looks very attractive.
After having my new ro unit running for a month or so now the only recommendation I would have is to get a unit that runs the waste water through a second ro unit to gain efficency. Most ro units are 1:4 so if you need 25 gallons of good water it will take 100 gallons to make it. If you add a second ro for the waste water this will really help on the water bill. Just my 2 cents to try and save yours
BeanAnimal
Premium Member
Depending on your water cost, you may never make the payoff point. Membrane recpalcement costs will keep it from ever happening compared to the water saved.
You mean 125 gallons
You may want to look at your water consumption vs the membrane cost and plot out a payoff, remember to calculate 2 years or so per membrane.
BeanAnimal
Premium Member
Read ONE Gallon of Product water PER FOUR gallons of waste.
It is a WASTE TO PRODUCT ratio
4 gallons of waste for every 1 gallon of product.
So 125 gallons.
Enjoy...
It is a WASTE TO PRODUCT ratio
4 gallons of waste for every 1 gallon of product.
So 125 gallons.
Enjoy...
BeanAnimal
Premium Member
All of the companies listed will say pretty much the same thing (though spectrapure will likely say that the other units are good, but not quite as good)
Just call one or two and talk to the sales people... they will be honest and helpful.
Just call one or two and talk to the sales people... they will be honest and helpful.
AZDesertRat
In Memoriam
The 100 GPD Dow membrane is not an RO membrane but is a nano filter. The difference is 90% rejection rate or efficiency versus 98+% guaranteed efficiency for the Spectrapure Select series membrane.
The 100 GPD Dow is not even approved for drinking water use by the ANSI/NSF in the United States. It is designed for and approved for "Pool and Spa Use" by the NSF.
To put the efficiency in perspective, for every 2% you increase the RO membranes efficiency you effectively double the DI resin life so that 8+% is a HUGE difference and more than worth the cost difference.
The 100 GPD Dow is not even approved for drinking water use by the ANSI/NSF in the United States. It is designed for and approved for "Pool and Spa Use" by the NSF.
To put the efficiency in perspective, for every 2% you increase the RO membranes efficiency you effectively double the DI resin life so that 8+% is a HUGE difference and more than worth the cost difference.
AZDesertRat
In Memoriam
Yes. It is the only hand tested and guaranteed RO membrane available today. If water quality is your goal nothing else comes close.
first i want to thank you for the advice (i did the order for it and for filter to)
also i want to say the service and the customer support was amazing and i recommend them to all .
now it's important question that i want to know or to understand :
i have this old membrane it's come pack seal and wet .
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160106267339
i ask the representative from spectrapure what is the different between those membran because the price to high . they told they are the same membrane and explain to me that they check the membrane and test it and it's come wet , when i tall them that this membrane (from ebay) come wet to they told me that it's good it's mean that they test the membrane.
i boght from them all the part but as i know you and bean said that those filter from ebay not worth the money..... if in spectra pure they said that if it's come wet and test rejection it's good why this item not worth the money . i need to change the connection as they suggest and i will do so .
but since you are Wastewater Operations Consultant i want to know if you compare those item maybe those filter still good and can be use.....
personal i bought the item but it's big different between the price and if you test those membrane (the ebay one) and it's good a lot of ppl can save a lot of money .
again thank you for the help .
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AZDesertRat
In Memoriam
I believe the e-bay filter to be a no name Chinese or Taiwanese import that is not tested or approved for drinking water use in the USA. Notice nowhere does it refer to any ANSI or NSF approvals norwill the vendor give you the brand name or place or manufacture. I have e-mauled this vendor on mpre than one occasion requesting information and my e-mails have all gone unanswered. This also makes me very suspicious. Reports form users here have not been good when it comes to that particular vendor. Most I have seen say it barely makes 90% rejection if that. I have never personally tested any of their systems but I am a firm believer in "you get what you pay for" and know a vendor cannot build and sell a quality system for what they are selling theirs for and stay in business if they are using name brand components. They sell complete systems for much less than you can buy the parts for which further reinforces my suspicions.
Saving money by shopping wisely is one thing but buying cheap components is another thing entirely.
Saving money by shopping wisely is one thing but buying cheap components is another thing entirely.
the true is that i use this system for the tank not for drink (because i never trust this system) and when i measure PO4 it's 0.00 ppm out the faucet also i read with the TDS 0.00 ppm to (but i don't know and not sure if this meter realy accurate...) . all the filter and the membrane change to spectra pure i take out the DI (De-Ionized) filter as explain to me (from spectra pure) no need it i also going to change the plumbing like this diagram at this way i can use the system for drinking to from now on .
http://www.spectrapure.com/huds/4-STAGE-DWK-RODI-NAG.pdf
on the description it's write :
TFC (made in USA)
100 GPD RO Membrane
but as you explain maybe it's import who knows i thought you test it ... becaue that i ask you .
i want to know to what type of TDS meter it's good and acuurate or if there's any type that you can recommend ?
Edit: this is what you recommend ?
http://www.eseasongear.com/hmcotdmewafr.html
thank you for the respond
http://www.spectrapure.com/huds/4-STAGE-DWK-RODI-NAG.pdf
on the description it's write :
TFC (made in USA)
100 GPD RO Membrane
but as you explain maybe it's import who knows i thought you test it ... becaue that i ask you .
i want to know to what type of TDS meter it's good and acuurate or if there's any type that you can recommend ?
Edit: this is what you recommend ?
http://www.eseasongear.com/hmcotdmewafr.html
thank you for the respond
Last edited:
http://www.melevsreef.com/ro_di.html
It does 100 gpd and its only $167 which is cheap compared to some of the other companies. Its a good system to buy.
It does 100 gpd and its only $167 which is cheap compared to some of the other companies. Its a good system to buy.
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