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Old 04-22-2011, 11:27 PM   #1
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Pre mixing my PWC water...

So I just got my RO/DI unit and I'm planning on using it to fill (probably not full) a 32 gallon plastic garbage can, and just mixing the salt in there up to proper SG. Then obviously adding more salt when I add water to keep SG correct. That way I have the water ready to go when I need to do my PWC's. Will the can (which I bought new today) cause any problems with the water, as long I keep the lid on?
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Old 04-22-2011, 11:36 PM   #2
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It should be food grade plastic i believe. Also a powerhead to mix the water
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Old 04-22-2011, 11:46 PM   #3
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Does it need to be constantly mixed? I got a thing like you mix paint with that attaches to a drill, to mix with...
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Old 04-22-2011, 11:49 PM   #4
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well, I dont have much experience since I've never made my own saltwater, but from taking college chemistry and everyday experience, I do believe that a powerhead would be better. Its like making lemonade, you can stir it for awhile, but you'll still have that lower of sugar on the bottom. The power head would constantly stir it so that the salt and water can completely be mixed.
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Old 04-22-2011, 11:52 PM   #5
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Agree with Henry. Just toss a powerhead in there and keep it plugged in. That, and a heater, and you're good to go.
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Old 04-22-2011, 11:52 PM   #6
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All it needs to do is be dissolved into the water though. Once it's dissolved it won't turn back into a solid unless all the water evaporates...
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Old 04-23-2011, 12:03 AM   #7
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yea, but if your planning to add it anytime soon, its better to have the water completely mixed.
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Old 04-23-2011, 12:11 AM   #8
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Beware that a garbage can is not designed to be filled with water. As plastic ages it becomes brittle, It will work for awhile but I would not trust it. If you do use it I would soak it for a day or two to leach any toxins from the new plastic. Then use it at no more than 75% of captaincy. Then search for a plastic 55 gallon drum preferably food grade and not used for strong chemicals. Drums designed for liquids have a smaller opening at the top for strength.
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Old 04-23-2011, 01:10 AM   #9
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Quote:
Originally Posted by denwhite16 View Post
All it needs to do is be dissolved into the water though. Once it's dissolved it won't turn back into a solid unless all the water evaporates...
You'll be surprised at the gunk that ends up precipitating out over time. Anyway... the powerhead is mostly to keep the water aerated.
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Old 04-23-2011, 01:13 AM   #10
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Ok, thanks for the thoughts guys.
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Old 04-23-2011, 07:55 AM   #11
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This is what I have set up in the garage - I'm sure you'll find similar in your location (US?)
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Old 04-23-2011, 10:15 AM   #12
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http://uk.ebid.net/for-sale/food-gra...rom=googlebase
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Old 04-24-2011, 09:37 PM   #13
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One more reason for the powerhead, you don't want stagnant water at 78-82 degrees, your asking for an algae farm along with who knows what else
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Old 04-25-2011, 01:05 PM   #14
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And just make it clear poeple say food grade plastic look for HDPE OR A LDPE. Usally will say it around the recycled symbol.
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Old 04-25-2011, 01:31 PM   #15
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I have something similar set up at work for make'n water that freezes at a lower temp for ice chips. It's basically a 55 gallon food grade drum with a bracket for a corded drill licked in the on position plugged into a timer and it has a 3 foot paint mixer attached. And my doseing pump slowly drips the salt water mixture into the sump of potable water. I have it set to come on every 12 hours for 1 hour which disolves the salt completely. I add about 25 lbs of salt every 3 days and never clogs. but I think for the use of have'n it on stand by for youre tank put'n a power head in there one its disolved is a good idea.
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