DIY water softner - The Planted Tank Forum
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post #1 of 3 (permalink) Old 06-02-2008, 01:45 AM Thread Starter
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DIY water softner

this may be impossible but i like challenges. any ways I'm thinking of creating a water softener that would sit under my tank but would only be functioning during a water change. the compo nets of a water softener look strait forward a contained to hold the salt and a pressure vessel that contains carbon.

the reason I'm considering this is because i would like to start housing discus fish and my water has a GH of 300+ and a KH of 300+. i currently have cichlids that thrive in my water.

any input would be greatly appreciated this may just be a crazy idea wouldn't be the first time just ask my fiancee
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post #2 of 3 (permalink) Old 06-02-2008, 03:56 AM
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The problem with that method of water softening is the salt itself. You are exchanging either a sodium or a potassium for the calcium or magnesium, that makes up your gH. Those salts that you put back in can have a negative effect on the system, Na much more so than K though. Water softening salts have no effect on kH, which is more important for plants.

If you're looking to house discus, you could acclimate non wild strains to your water. They can live a very healthy life in that type of environment, I've seen it first hand. Breeding them in that water would be a different story, you cannot substitue water softening salts for an R/O unit in that case.
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post #3 of 3 (permalink) Old 06-04-2008, 06:31 PM
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If you're set on DIY the best thing to do would be to distill your own water, it takes a lot of energy to boil water so it won't be very economical though.
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