I'm looking to purchase an ro/di unit, and I'd like to keep it under $200. What are the best systems for this price?

I paid less than $100 for mine from ebay.

THe units are all essentially the same. THe filters used are the big difference. Focus on the filters first. Then, I would look into a company who will stand behind their products should anything go wrong.

Have you checked out these (http://www.atlantareefclub.org/forums/forumdisplay.php?f=122)?

TDS around atlanta are actually pretty good to start with so you really dont need a really high end unit.

CBA has some great units anywhere from 3 stage RO, to 5 stage RO/DI.

I got the 5 stage Ro/DI with the dual inline TDS meter, and its great. Put out well over 2000 gallons of 0 tds water, and thats before the DI stage. The resin is barly even used.

Good stuff.

I bought mine from Air Water Ice (now a sponsor) several years ago and have been very happy with the unit. Their replacement filter costs are quite low. I recommend getting the refillable resin cartridge. Very economical in the long run.

Edit: This (http://www.airwaterice.com/product/1TYPHOON/Typhoon_5_stage_RODI_Reefkeeper_75_GPD.html) is the unit I have from them.

I honestly bought a RO unit from Menards when I first started. Thought about replacing it but all seems well with it and I never have any problems. For less than 200 bucks. I am very happy with it.

Thanks for the responses. George, that really looks like a great, and a great price. I may just order it right now!

I also just noticed in the product description that the units include reusable DI cartridges standard now! I had to pay $30 for mine. :sad:

They sell resin in 5lb bags for $40.

Just ordered the typhoon III.

http://www.airwaterice.com/product/1TYPHOONIII/TYPHOON_III_AQUARIUM_RO_DI_75_or_100_GPD.html

$19 ARC discount for a total of $196 (that includes shipping)! It comes with an HM digital TDS meter as well!

Ro unit arrived yesterday. Wow that was fast! Thanks AWI. I don't have it hooked up yet, but it looks impressive.

whats the difference between the typhoon and typhoon 3?

"The Typhoon III adds a DI bypass assembly, an RO only valve, a membrane fast flush valve and comes with a HM DIgital hand-held TDS Meter ($60 more value)"

And it's only $40 more. I figured the tds meter was worth it.

were carring aqua 100 gd r/o d/i for 239.00 this is the brand we use in the store great unit.

great info, but..i'm not a plumber, how do you hook these up, i been getting RO/DI from my neighbour, but i'd like to stop bugging him for it all the time, and he's out of town to much to help me hook it up

Hook the RO to either a faucet or into your plumbing line using a saddle valve.

^^uh, doesnt it take a while to make, say..10 gallons of RO water? I mean, i just need it for top-off and twice weekly waterchanges.

i mean month water changes..lol not weekly

Is there anywhere to get good RO/DI water locally and for cheap?