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Water for Cooling Loop.

post #1 of 10
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Just thought of this and I wanted to get some opinions on it. I have a saltwater aquarium at home that I use a 5 stage RO unit with a deionization unit to create 0 tds water for the tank. Now I am assuming this water would be fine to use in the loop and probably better than distilled. Has anyone tried it before?
Edited by Colonel Sanders - 10/24/11 at 8:09am
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post #2 of 10
Uhm your aware salt water is corrosive. The reason it is not an issue for the aquarium loop is that most of the parts are plastic because the aquarium loop doesn't need to cool anything. Also saltwater wouldn't cool any better than distilled in fact it would be worse since water has one of the highest thermal capacities of any material adding salt which has a relatively low thermal capacity would diminish the solutions total specific heat capacity.
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post #3 of 10
Quote:
Originally Posted by DSP1 View Post
Uhm your aware salt water is corrosive. The reason it is not an issue for the aquarium loop is that most of the parts are plastic because the aquarium loop doesn't need to cool anything. Also saltwater wouldn't cool any better than distilled in fact it would be worse since water has one of the highest thermal capacities of any material adding salt which has a relatively low thermal capacity would diminish the solutions total specific heat capacity.
Do you know what RO stands for? Reverse Osmosis. At 0ppm TDS, the water has NOTHING in it. Distilled water is only rated for less than 10ppm by regulation.

To the OP, I have never tried it, but the physics is there. I wouldn't expect much more out of it though.
post #4 of 10
Thread Starter 
Thanks, I wasn't expecting any difference in performance at all. Just figured i'd use that instead of going out and buying distilled water.
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post #5 of 10
Quote:
Originally Posted by Colonel Sanders View Post
Thanks, I wasn't expecting any difference in performance at all. Just figured i'd use that instead of going out and buying distilled water.
post #6 of 10
I kind of doubt a consumer reverse osmosis unit would provide purer water than industrial distillation, but I suppose with a biocide of some sort you'd be fine.

Just to clarify, for your aquarium you use your RO unit to purify the water and then add a salt solution?

Also, is the statement in bold correct or not? Reverse osmosis is used for drinking water, right?
post #7 of 10
I actually use RO water for my loop, but I have easy access to medical testing labs and they don't care if I sneek home a gallon every now and then seeing as how they use 100's of gallons a day around here...if not thousands.

Doesn't really matter though. As soon as the water even touches the jug I haul it home it probably is no better than distilled water. If it didn't it would start getting contaminants as soon as you poured it into your loop. In the end, just go with what ever is easiest to get. if I could make it at home i'd probably just use that. The only reason I use the RO water from work is then I know the source and I am not wondering if they just paid some one minimum wage to fill empty milk jugs with tap water.
Edited by Vagrant Storm - 10/24/11 at 8:30am
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post #8 of 10
Quote:
Originally Posted by t-ramp View Post
I kind of doubt a consumer reverse osmosis unit would provide purer water than industrial distillation, but I suppose with a biocide of some sort you'd be fine.

Just to clarify, for your aquarium you use your RO unit to purify the water and then add a salt solution?

Also, is the statement in bold correct or not? Reverse osmosis is used for drinking water, right?
Industrial distillation has requirements and regulations. Distilled water only needs to be under 10 ppm TDS. Why would they spend more money to further purify their product if its not needed?

Quote:
Originally Posted by Vagrant Storm View Post
Doesn't really matter though. As soon as the water even touches the jug I haul it home it probably is no better than distilled water. If it didn't it would start getting contaminants as soon as you poured it into your loop. In the end, just go with what ever is easiest to get. if I could make it at home i'd probably just use that. The only reason I use the RO water from work is then I know the source and I am not wondering if they just paid some one minimum wage to fill empty milk jugs with tap water.
This^
post #9 of 10
Thread Starter 
Quote:
Originally Posted by t-ramp View Post
I kind of doubt a consumer reverse osmosis unit would provide purer water than industrial distillation, but I suppose with a biocide of some sort you'd be fine.

Just to clarify, for your aquarium you use your RO unit to purify the water and then add a salt solution?

Also, is the statement in bold correct or not? Reverse osmosis is used for drinking water, right?
Well the water that comes out is reading at 0 parts per million total dissolved solids. Basically saying it has absolutely nothing in it. I am pretty sure it still has something in there but just not detectable to the device. Yes I purify the water from the well and then mix in the salt afterwards. I doubt there's much difference in the purity of the water between consumer or industrial its just that industrial can produce way more pure water then i can. My unit is rated at 75 gallons per day and i dont even get that.
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post #10 of 10
Quote:
Originally Posted by rockosmodlife View Post
Industrial distillation has requirements and regulations. Distilled water only needs to be under 10 ppm TDS. Why would they spend more money to further purify their product if its not needed?
Right. But are home RO units really good enough to achieve greater purity than that? Just curious.

Edit:

Quote:
Originally Posted by Colonel Sanders View Post
Well the water that comes out is reading at 0 parts per million total dissolved solids. Basically saying it has absolutely nothing in it. I am pretty sure it still has something in there but just not detectable to the device. Yes I purify the water from the well and then mix in the salt afterwards. I doubt there's much difference in the purity of the water between consumer or industrial its just that industrial can produce way more pure water then i can. My unit is rated at 75 gallons per day and i dont even get that.
Okay, nice. I've just noticed a few times that bottled drinking water uses reverse osmosis, so I wasn't sure how that compared to distillation.
Edited by t-ramp - 10/24/11 at 8:38am
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