How many people run 3 stage DI?
- Thread starter PSU4ME
- Start date
Ttran102
Well-Known Member
i dont think it necessary since but it will save the life span of all the di resin with more stage. Because at the end of the output as long as your water come out 0 tds then that's all it matter imo. Also i think its depend on the city you live in. For example in the city the water is really dirty so high tds so they can use like 7 or 8 stages of rodi unit to make sure water came out completely clean.
OP
OP
PSU4ME
Well-Known Member
This sounds weird but I’m not sure if 0 tds means pure, no nothing water. I currently run two mixed beds, 0 tds after first then it goes through second. Ati test shows silica getting through.
Bought the 3 stage as they say it works differently and as you said, makes the media last. TBD
Bought the 3 stage as they say it works differently and as you said, makes the media last. TBD
MikeG
Non-member
Takes a certain amount of solids to register at 1 TDS, 500ug I recall seeing somewhere. So it is possible for stuff to get through and read 0 TDS.
thrillreefer
Well-Known Member
0 TDS is pretty pure but could have a bit of ions. Interestingly water with no ions could still register above 0 due to conductivity from dissolved CO2.
Lots of good info from Randy H-F in here: https://www.reef2reef.com/threads/what-is-tds-really-is-0-tds-water-necessary.226110/
Lots of good info from Randy H-F in here: https://www.reef2reef.com/threads/what-is-tds-really-is-0-tds-water-necessary.226110/
thrillreefer
Well-Known Member
I think TDS is usually in ppm, so yeah 1 mg ions per L. But I guess 500 ug or 0.5 ppm might round up to 1?
MikeG
Non-member
Ah yup, was blanking on unit for TDS. 1 ppm is indeed 1mg/L
Chris A.
Formally toomanyfish
You need a spectrpure color changing silica buster di cartridge. It will take care of that problem.
SpectraPure High Capacity Silica Buster Color-Indicating DI Cartridge HC
SpectraPure SilicaBuster Color-Indicating DI Cartridge HC - 10 inch - Compatible with All Reverse Osmosis 10 INCH HOUSINGS - Superior Purity
andremueller.e-junkie.com
Chris A.
Formally toomanyfish
Isn’t it awesome , I’m on the second year on RM and of no water changes and only make 7 gallons weekly for evaporation.
Ttran102
Well-Known Member
Haha try that with 100g plus tank
MikeG
Non-member
Right? I am going through about 35-40g of top off a week was hoping to better insulate and cover some of the basement tanks before this winter but never got to it
BiGGiePauls33
Current BRS President
I'm at about 30-35 gallons every 10 days or so.
OP
OP
PSU4ME
Well-Known Member
So I set the 3 stage up today. Found it interesting that after it running for a while, I had 3 tds going into the Cation stage, 8 tds coming out! I don’t have a tds meter on the second stage (anion) but I do in the 3rd (mixed). 3rd stage showed 0 in, 0 out so the ati test will be the judge on whether or not it removed the silica.
While I anticipated the single stages to not remove everything, I didn’t expect it to ADD tds!
While I anticipated the single stages to not remove everything, I didn’t expect it to ADD tds!
If I remember correctly from the Brs in depth video on the pro DI it will show tds due to the positive or negative ion charges from each of the canisters but what’s important is the 0 tds coming out of the mixed bed at the end
robanister
Well-Known Member
Change your salt ...aquaforest has been great. Frags I grabbed really coloring up.
