RO/DI filter hit a new low price

[dz6t]

Waoo, how low can they get these days?

http://cgi.ebay.com/New-Reef-6-st-1...448373206QQcategoryZ20684QQrdZ1QQcmdZViewItem

 

[nitrofish]

looks good, but I would buy better cartriges for them, many use coconut carbon and other bottom grade filter media. great for drinking water, but for a reef I would upgrade them

 

[naturebatslast]

Wow, that's cheap. I was looking at other RO/DI units and for a 6 stage, it's at least 200 bucks. Are the filters a standard size? Would anyone buy a unit like this one? This could save some cash, but I'd one prefer that would last. Any comments?

 

[Ray]

Look at the shipping cost on it

 

[naturebatslast]

Still, it's 100 bucks less. I'm just nervous taking a gamble on the cheap, it's always come back to bite me in the booty.

 

[delta]

i would imagine the 100gal\day has at best a 92% rejection rate. with all that extra DI your going to use it would be worth getting a unit that has a membrane with 98% rejection rate

 

[johnny]

and the canister's are not clear. I like to see the filters in side to see how dirty they are.But thats your choice
I bought this one 115.00 shipped http://cgi.ebay.com/AQUARIUM-2-110G...751318240QQcategoryZ20756QQrdZ1QQcmdZViewItem

 

[delta]

and the canister's are not clear. I like to see the filters in side to see how dirty they are.But thats your choice
I bought this one 115.00 shipped http://cgi.ebay.com/AQUARIUM-2-110G...751318240QQcategoryZ20756QQrdZ1QQcmdZViewItem

According to their calculations it only has a 95% rejection on th membrane and the rest of the calculated rejection is based on DI removal of TDS

If it had a 98% rejection on the membrane you would end up with TDS reading of 6 from the 300 they use, but they estimate a TDS reading of 15 (95% membrane rejection) a difference of 9 which will chew alot of DI.

The membrane is the heart of the RO\DI system. Good one are not cheap so make sure you double check the membrane in the system it makes a huge difference long term running costs. Don't be sold only gal\day.

 

[nitrofish]

and the canister's are not clear. I like to see the filters in side to see how dirty they are.But thats your choice
I bought this one 115.00 shipped http://cgi.ebay.com/AQUARIUM-2-110G...751318240QQcategoryZ20756QQrdZ1QQcmdZViewItem

thats what I got also, only I didn't get clear housings, I feel ripped off

 

[naturebatslast]

After looking back at that ad, it does have a less effecient filter. I was looking at airwaterice, seems like some postive results from members. I was looking at a 5 stage for $130 with a 98% rejection rate. Are people still hearing good things about this company? Thanks NBL

 

[johnny]

According to their calculations it only has a 95% rejection on th membrane and the rest of the calculated rejection is based on DI removal of TDS

If it had a 98% rejection on the membrane you would end up with TDS reading of 6 from the 300 they use, but they estimate a TDS reading of 15 (95% membrane rejection) a difference of 9 which will chew alot of DI.

The membrane is the heart of the RO\DI system. Good one are not cheap so make sure you double check the membrane in the system it makes a huge difference long term running costs. Don't be sold only gal\day.

I've had it for a year or so now make up about 200 gallons a month so lets say 2000 gallons so far di is still blue half way down the canster and the tds is 8 on my meater
maybe my meater is off can you calabrate it
would you mind thlling me what is the best set up is how many canisters to have/pre filters?
I wass heading that it would be better to have 65 gallon a day for some reason could explane thanks

 

[delta]

After looking back at that ad, it does have a less effecient filter. I was looking at airwaterice, seems like some postive results from members. I was looking at a 5 stage for $130 with a 98% rejection rate. Are people still hearing good things about this company? Thanks NBL

Yes still good things, I actually just upgraded to a eskimo 150 gal/dal dual membranes but the best thing about the unit is that it function with cold water and low pressure both of which I have.

The best thing though about this company is there customer service. I had a problem after about 2 years use, I have heavy Iron so they sent me additional prefilters and the housing at no cost to help me out and it solved my problem.

 

[naturebatslast]

Looks like airicewater may win out. I just trying to squeeze out every buck I spend.

 

[delta]

I've had it for a year or so now make up about 200 gallons a month so lets say 2000 gallons so far di is still blue half way down the canster and the tds is 8 on my meater
maybe my meater is off can you calabrate it
would you mind thlling me what is the best set up is how many canisters to have/pre filters?
I wass heading that it would be better to have 65 gallon a day for some reason could explane thanks

Usually the unit will have
1 sediment filter
2 carbon
3 low micron carbon or low micron sediment
4 RO membrane
5 DI single or double

Now if the membrane takes more out of the water it reduces the amount of work the DI has to do. Where you have dual DI and have a TDS reading of 8
I would say you DI is already done even though it is still blue I have had that happen before. Your TDS should read 0 after a dual DI setup.
Your unit is fine you can just get a different membrane with a better rejection rate of 98%

 

[nitrofish]

im getting 0-1 tds out of mine, so thats not so bad.

 

[johnny]

Usually the unit will have
1 sediment filter
2 carbon
3 low micron carbon or low micron sediment
4 RO membrane
5 DI single or double

Now if the membrane takes more out of the water it reduces the amount of work the DI has to do. Where you have dual DI and have a TDS reading of 8
I would say you DI is already done even though it is still blue I have had that happen before. Your TDS should read 0 after a dual DI setup.
Your unit is fine you can just get a different membrane with a better rejection rate of 98%

thanks for the help

 

[delta]

im getting 0-1 tds out of mine, so thats not so bad.

After your membrane or you DI?

 

[nitrofish]

After your membrane or you DI?

after the di, the final water I use

 

[delta]

Ah ok I see, I was just trying to point out if you had a lower reading after your membrane then you would use less DI. So spending a little more on a better membrane would save you more in the long run. But of course you can take that FWIW

 

[RichConley]

Looks like airicewater may win out. I just trying to squeeze out every buck I spend.

Just get a 75gpd unit, and you'll get the higher rejection rate, the 100s arent very efficient...


although for people with really low tap tds, we dont care (mine is 35 tap, so 95-98% is really nothing.)