RO/DI System with Cheapest Replacement Costs

I have a 165 Gal Saltwater tank. Going to the grocery store and buying gallons of purified water is getting expensive for water exchanges.

Kent Marine and Cora Life offer some nice RO/DI units but they are expensive.

I found this one that offers great GPD rate.
Melevsreef.com - 100gpd RO/DI System (Im worried this product is inferior and has expensive replacement costs.)

My question for the pros is....

What RO/DI unit has the cheapest replacement cartridges and most readily available parts? + Quality

 

Check out the link in my signature and see how they compare...

 

I bought mine at Air, Water, and Ice. I have the typhoon 3 system and did real well. I got lazy and did not check my TDS and it got up there before I realized it. I bought replacement resin from Bulk Reef Supply only because money was tight as it is right after Christmas and they sold a single replacement. But RO/DI is a lifesaver for me. I absolutely HATE carting water from the store and I was there all the time. I supply my tanks (135, 75, 29, 12,) along with my mothers tanks (75g and 6g) so it was costing me a fortune just buying water while the cartridge was down

 

mev's model is great hot some good review on it you can also look at buckeye filed supply, there premium one is great also

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I recommend buying it from Bulkreefsupply.



5 micron depth sediment filter
5 micron MATRIKX CTO/2 carbon block
0.6 micron MATRIKX+1 carbon block
1 refillable DI cartridge filled with color changing DI resin

 

i also bought the one pictured from bulkreefsupply.

 

I bought mine from Air, Water and Ice. Good prices, and great service. And a 3 reef sponsor which is nice

 

To the bulkreefsupply buyers, have you ever had a problem with a brand new unit having extremely high TDS readings (with the meter calibrated)? Maybe you could help someone in my local forum that is having a problem...? The Reef Tank - View Single Post - Baffled, and I need help, after RO 7-8, after DI 40?!

 

mine is 1 coming out of the membrain and 2 out of the DI, altho mine has never been calibrated, i am going to but a good TDS meter and see what that says?

 

Mine is 0 coming out of the memebrane and 0 out of the DI

But i have a 8 stage RO/DI, i don't know if that makes a difference.