rodi unit anyone used this one

[bluegrizzlies1]

http://www.airwaterice.com/c=0jbDKcL.../product/1MMDI

wanted to know if this would be good to use on a 12gallon aquapod?

Anyone own this or know how good it is if not what do you reccommend

[rjsilvers]

Only three stages, 50gpd and looks awful cheap for the price.

I got 100gpd 5-stage from Aquasafe Canada on Ebay for less than that and I'm very happy with it.

[kau_cinta_ku]

good brand but IMO the smallest one I would be the typhoon 5

http://www.airwaterice.com/product/1...er_75_GPD.html

[The Saltman]

I agree with the aquasafe from ebay. Was a very good unit for me for the price.

[BigManBud]

Im using an aquasafe from ebay also. works good

[AZDesertRat]

Steer clear of the e-bay units. You get what you pay for. They may work but they do not compare to reef quality units like those found here on RC. Just because they look the same does not mean they work the same. Its all about what is contained in the housings and the quality of the filters is very important. Look for things like a 0.5 or 0.6 micron Matrix Chlorine Guzzler solid carbon block good for 20,000 gallons of water, full sized 20 oz vertical canister type DI filter, 75 GPD Dow Filmtec membrane, RO bypass valve, an inline pressure gauge, etc.
Note the e-bay unit has a granular carbon cartridge which you should throw away, a tiny inefficient 6 oz horizontal DI, a 5 micron carbon block good for about 1,000 total gallons of water including waste flows, an Applied membrane (which isn't too bad but only equal to Dows 75 GPD at the same psi.), no RO bypass, no pressure gauge..........Probably OK for drinking water but not reef water.

I would spend the little bit more and get a full size unit. The mini units use small throw away replacement filters that will end up costing more to replace, will not last as long and willl not filter as well.

[HumanIMDB]

Hrm, we've been looking at the Aquasafe unit for our new 92g setup...PM sent for options...but if you want to comment here, that would be great too.

I've thought from the beginning that their price seems a little on the cheap side but don't know enough about the components to know the difference between their unit and the more expensive units made by Kent or other "reef" manufacturers. I've thought they might just be taking advantage of us reefers because they can.

If you were buying a new unit, which would you get?

[AZDesertRat]

None of the filters in the Aquasafe unit are suitable for reef quality water, with the possible exception of the RO membrane. They use a 100 GPD Applied membrane which is comparable to a 75 GPD Dow Filmtec. Applied and others say 100 GPD at 65 psi, Dow says 75 GPD at 50 psi which at 60 psi equals 90 GPD and at 65 psi equals 100 GPD. Rejection rates are similar at 96-98% efficiency.
Thye use granular activated carbon which releases fines as it degrades and can plug downstream filters or the membrane if not kept well flushed. They also use 5 micron carbon block instead of a 0.5 or 0.6 micron Matrix carbon block like better units use. The differences are granular cartridges are good for 300 to maybe 600 total gallons of chlorine reduction, keep in mind that includes waste flows too(60 to 120 good gallons and 240-480 waste gallons) and 5 micron carbon block do about 1,000-2,000 total gallons. A single Matrix 0.5 micron carbon is good for 20,000 gallons and is highly effective on chloramines due to its massive pore structure.

The DI is a small 6 oz horizontal tube that channels and short circuits for poor treatment and short life. A good unit uses a 10" vertical canister with a refillable cartridge that holds 20 oz of resin and has excellent treatment due to its bottom up flow pattern.

Better units include things like an RO bypass valve so you can use RO only for drinking and other uses, an inline pressure gauge for troubleshooting, some include flush valves, have adjustable flow restrictors, and on and on.

You get what you pay for.

[HumanIMDB]

Thanks to AZDesertRat's guidance, we are now looking at the more economical Premium Series 150 gpd RO/DI System and the top of the line SpectraPure MaxCap RO/DI System, 90gpd w/ Pressure Gauge & Purity Monitor for our AGA92 Corner setup.

I'm going to play with the numbers, but we'll likely save the extra money spent on the MaxCap in media over the long run.

Thanks A. J.!

I'm always appreciative of the level of knowledge available on RC...