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Old 11-21-2007, 01:45 PM   #1
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What does your RO/DI water cost you.

Currently I am getting my RO/DI water from my LFS I just take in my 5gallon jugs and he fills them for me. It costs $2.00 per jug about .40 cents per gallon. I have been debating spending the 200 dollars for an RO/DI unit but I am wondering if it may be easier to continue to get it from the LFS I don't have to worry about changing the filters or waiting for the buckets to fill. I just drop them off and pick them up later. How long does it usually take for a 5 gallon bucket of water to be dispensed from an RO/DI unit a really long time??
Plus its on his water bill not mine What is your cost per gallon for RO/DI water in your home and how long does it take to fill a bucket??
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Old 11-21-2007, 02:54 PM   #2
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I was paying $0.75 per gal at LFS.

If you do the math, even at $0.40 per gal. You will get off a little cheaper, and if you figure in the cost of gas to drive to LFS and your time driving. You are much better off.

Mine takes about 2-3 hours to fill a 5gal jug. If you have higher water pressure than I do, it will take less time. My pressure at the unit is about 42 psi. If you have 45psi or better, you will get a faster fill and your DI resin will last longer (ie..more gallons per refill), which will lower the overall cost per gallon more.

I got mine from www.thefilterguys.biz

I have the OCEAN REEF + 1 FIVE STAGE 75 GPD RO/DI with an upgrade to Dual DI for $30 more since I had lower pressure.

It's a great unit, and the company is VERY helpful. Send them an email with what your RO/DI needs will be, they will tell you exactly what you should get. When I had the problem with the low water pressure, they troubleshot it with me and came up with a solution. Excellent customer service.
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Old 11-21-2007, 03:44 PM   #3
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Ours is 1.50 a gallon here , I just use distilled we rent our house so we are not aloud to fudge with that kind of stuff here to put in a RO/DI system
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Old 11-21-2007, 04:18 PM   #4
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Aww, sure you can...couple of 2x4's and you could make a small stand to mount the RO/DI unit on and your in business.

You should see how I moded my BioCube 29's top to accomodate the new light fixture and keep part of the original hood to cover the filtration area. Anything can be made to work.
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Old 11-21-2007, 04:35 PM   #5
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IF we get caught here we are done we already are in the outs with the landlord for a neighbor that caused issues , he saw the tank and is flipping mad as anything over 10 gallons is considered water furniture however I have a 10 and a 1/2 ten or so so tech it is 2 small units and the 1 gallon betta tank the land lord is an @ss
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Old 11-21-2007, 04:51 PM   #6
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3 hours for 1 five gallon batch of RO/DI water holy cow. What a pain
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Old 11-21-2007, 05:20 PM   #7
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It depends on what the unit is rated for (50/75/100/150 gpd), the pressure (under 50psi takes longer) and the temperature of the incoming water line. So at 50 degrees with 50psi and a 100gpd unit, it will take just over an hour to fill a 5 gallon bucket.

If your pressure is low you can get a booster pump for around $75.00

I have the Typhoon III from airwaterice.com. I've had it for 3 years. I used a garden hose adapter to connect it to my kitchen faucet when I need to make some RODI water. The rest of the time the unit is out of site. I replace the sediment filter every 2 months and the carbon filters yearly. I replace the DI when my tds start to creep above 0.

I fill a 45 gallon top off reservoir every 3 weeks or so.
This is a LOT cheaper than buying water.
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Old 11-21-2007, 05:22 PM   #8
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I don't pay anything for mine. I have a RO/DI unit and I make my own. I have a 30gallon container that I fill it takes about 8-10 hours for me to get it full but that is what I use to mix my SW with. I also use it to top-off my tank.
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Old 11-21-2007, 05:45 PM   #9
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Quote:
Originally Posted by cmor1701d
I have the Typhoon III I replace the sediment filter every 2 months and the carbon filters yearly. I replace the DI when my tds start to creep above 0.
So how much do the replacement filters cost you to be shipped to your door what is your yearly total expense for the replacement filters.
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Old 11-22-2007, 12:53 PM   #10
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The cost per year to replace the filters is going to be far less then buying RO/DI water from an LFS. How often you have to replace your filters is going to depend on your source water. I am lucky that I get a good years worth of use out of mine and I'm on well water. Luckily my water is excellent and there isn't a lot to remove, so I get more life out of my filters. I spend about $60 per year on replacement filters. I order then from ebay.

I looked at buying water from my LFS but I don't know how good their water is, how often they change their filters. I just don't trust my reef to anyone else. I do PWCs every other week on my tank and I usually change 20-30 gallons at a time. even at $.50 a gallon I'm making out by making the water myself.
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