help choosing an RO/DI unit

P

Pensky

Premium Member
I have currently been using tap water and want to upgrade to a water filter, but I have a budget of $150.00. Any Suggestion of the following filters I have found so far.

SpectraPure® Maxpure 25 GPD RO/DI System $159.00
HTML: 
http://www.marinedepot.com/SpectraPure_Maxpure_25_GPD_RO_DI_System_24_to_40_Gallons_Per_Day_RO_DI_Water_Filter_Systems-SpectraPure-YSP1311-FIRORDFT-YSP1311-vi.html


Coralife Pure-Flo II RO Units (50gpd 4 stage) $143.99
HTML: 
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=12093

Marine Pro RO and DI System - 100 gpd $169.99
HTML: 
http://www.thatpetplace.com/pet/prod/235669/product.web

Any Suggestions are welcome
 
I recommend Buckeye Field Supply- they are very active in helping on the forum and they carry a good product.

As far as a unit goes:
- I like the clear housing as it lets me see what the sediment filter and color changing DI look like. I tend to forget things, so a visual is good for me.
- Also, get a vertical DI, not a horizontal if you can. This allows more even contact with the resin as I understand it, and refilling is a snap.
- Make sure there is a pressure gauge before the RO membrane or, like me, you'll end up adding it on later.
- Also, make sure there is a tee valve after the RO, before the DI. This way you can test the TDS of the water out of the RO as well. Also, this makes a good way to purify water for drinking (yumm.)

If it were me, I'd get the 75gpd on this site:
http://www.buckeyefieldsupply.com/showproducts.asp?Category=168&Sub=166

It's $169, but appears to have all the goodies. Pressure gauge, tee valve, even a TDS meter. :)

-A
 
Go buckeye field supply.

You won't be dissapointed for the extra $19 in your budget. Russ throws in everything
too! Tubing, filters, guage, ro split built in, etc. He builds them custom and they are built for decades to come.

Buckeyefieldsupply.com
 
Newreeflady

follow her check list and I'll add one more thing. The
more gpd isn't always better. The higher gpd the unit is the less final sediment the membrane will filter. A 75 gpd unit will capture 98% where as a 100 gpd unit the membrane will only collect 93% and so on. Also the higher gpd the unit the more pressure you will need to have. Most people don't have the pressure for anything over 100 gpd so they end up needing a booster which is around another $100-125.
 
My final words lol. Pass on the spectapure. 25 gallons a day means it's going to take you 5 hours to get 5 gallons. That isn't worth $159. Not even to a 29 gallon tank.

I wouldn't buy coralife products. Never heard of consecutive positives in their units. As for the last unit I have no input as I've not been exposed to them.
 
purelyh2o.com is whom I use.

I originally bought a Ebay 5 stage "johhny come lately" RO/DI unit for $69.00 plus shipping. The guy disappeared so thats why the moniker. It was 100gpd unit. It sucked.

I took the advice from folks on this board and replaced the 5 micron sediment filter with a 1 micron, the 1 micron carbon with a .5 micron, and the 100 gpd (made in China) membrane with a Dow Syntec 75 gpd membrane. I also chucked the small DI cannister and replaced it with a 10 inch, cartridge loading, model. All from purelyh20.com. Checked my municipality's water supply and found that they use Ozone to purify it and they dump Chloramin. I purchased a years supply of catalytic carbon.
 
SpectraPure said:
Our ProPlus RO/DI system is on sale now for $149:

http://www.spectrapure.com/email/customer-appreciation.html

Scott
SpectraPure, Inc.
Click to expand...

That unit also looks good. Although, BFS claims 20000 gallons "chlorine guzzler" carbon block, and the one included with the spectrapure says 9000 gallons.

I do use spectrapure filters personally- I like the zetazorb micron filter (recommended by BFS, actually.) That one isn't included in the unit above, though. Appears to be a solid unit from the description. You still need to buy a TDS meter, though, so add that to the cost before choosing.

Best,
-A
 
bump on the spectapure. That is the same unit that buckeye field supply sells for $169.

I wouldn't pass up that deal and it's exactly in your budget!
 
Newreeflady said:
That unit also looks good. Although, BFS claims 20000 gallons "chlorine guzzler" carbon block, and the one included with the spectrapure says 9000 gallons.

I do use spectrapure filters personally- I like the zetazorb micron filter (recommended by BFS, actually.) That one isn't included in the unit above, though. Appears to be a solid unit from the description. You still need to buy a TDS meter, though, so add that to the cost before choosing.

Best,
-A
Click to expand...

The spectrapure pro plus comes with a dual probe TDS meter.
 
DC 40gallon I don't know where you are getting your numbers from but a quality 100GPD RO/DI units have a 98% rejection rate not 93%. Another thing is once you buy the unit, most use a standard 10" filter that can be purchased from any vendor.
 
Depends on the membrane scottwhitson. Also the higher you go the lower the filtration rate. People just need to do their homework and understand that before they make a "more gpd is better" purchase.
 
What do you mean "the higher you go the lower the filtration rate?" If the rejection rate is 98% then that is what it is capable of. Correct?


DC_40gallon said:
Depends on the membrane scottwhitson. Also the higher you go the lower the filtration rate. People just need to do their homework and understand that before they make a "more gpd is better" purchase.
Click to expand...
 
I recently got mine from Bulk Reef Supply and have been very happy. I like having the separate dual DI canisters for easier refills.
 
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