Distilled Water - Tropical Fish Keeping - Aquarium fish care and resources

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post #1 of 14 Old 03-10-2009, 11:26 PM Thread Starter
Distilled Water

I have been using distilled water (store bought) for water changes and top off in my 14 gallon biocube for awhile. I have been reading that RODI is better for a reef tank than distilled. I had always thought that distilled was better than RODI. Any thoughts on this?

125g cichlid - 14g biocube reef - 6g planted Edge - 20g L goldfish/African Clawed Frog
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post #2 of 14 Old 03-12-2009, 11:58 AM
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I was always told that using distilled water is bad for a tank because it doesn't have any of the good nutrients in it that the fish need. Likewise I've always been told that using RO water is great for the fish. Personally I just use declorinated tap water because it's easier. If your going to use RO water in the future then just buy it at the store, it takes 3 gallons of regular water to make one gallon of RO water and it takes FOREVER if you buy your own thing to make the RO water, plus you have to change the carbon in it monthly which is very pricey.
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post #3 of 14 Old 03-12-2009, 03:13 PM
Provided that you add proper amt of additves (Ca, Mg,etc), distilled water is better than RO/DI. (Even RO/DI has to be dosed w/ addtives.
Distilled was is pure water where RO/DI still has some dissolved solids. For you nano, would use distilled Water rather than investing in RO/DI unless want to get one for household use. RO/Di is not cheap to buy and also not that cheap to run and properly miaintained.
Better RO/DI (produces less gallons/day) will watse more water than less effecient one (produces more gallon/day) and cost of replacement membrane, etc. arent cheap either, especially if your tap is very hard water (high mineral contents as in well water).
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post #4 of 14 Old 03-12-2009, 04:43 PM Thread Starter
oh cool thanks. My salt has supplements in it, and i also dose when needed. So I'm good then.

125g cichlid - 14g biocube reef - 6g planted Edge - 20g L goldfish/African Clawed Frog
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post #5 of 14 Old 03-12-2009, 05:30 PM
I think so. I also have 10 Nano soon to be either filled with frags or baby Seahorses, Well, hopefully..
Such small volume can foul up fast so should control feeding well and keep closer eye on water than larger tanks. Just a friendly reminder!
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post #6 of 14 Old 03-12-2009, 10:44 PM Thread Starter
Yeah, my tank is a pain in the butt, but I test and do water changes weekly. More than once a week if I feel that it needs it.
Shadowcat0789, you don't have any bad side effects in your tank because you use tap water? The tap water where I live is awful, it has a ton of phosphates and even traces of copper from the old pipes here. But I have heard there are places that have reef quality tap water.

125g cichlid - 14g biocube reef - 6g planted Edge - 20g L goldfish/African Clawed Frog
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post #7 of 14 Old 03-13-2009, 12:17 AM
Quote:
Originally Posted by ThalesthePearsei View Post
Yeah, my tank is a pain in the butt, but I test and do water changes weekly. More than once a week if I feel that it needs it.
Shadowcat0789, you don't have any bad side effects in your tank because you use tap water? The tap water where I live is awful, it has a ton of phosphates and even traces of copper from the old pipes here. But I have heard there are places that have reef quality tap water.
Did you lnow that some building/house have system where it release some chemical to free of thing that build up in the pipe. And such chemicals are known to have phosphate attached. Maybe thats why high phosphate on your tap? I did not know NYC is particularly high on PO4.
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post #8 of 14 Old 03-13-2009, 05:25 AM Thread Starter
I tested tap water here for phosphates when first moved over here out of curiosity, and it was pretty significant. I used tap water when I first began my reefkeeping hobby because I just didn't know any better, and all that I can say is...never again, no mater how great the tap is.

125g cichlid - 14g biocube reef - 6g planted Edge - 20g L goldfish/African Clawed Frog
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post #9 of 14 Old 03-13-2009, 12:06 PM
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I don't notice anything, everyone appears to be doing great and nothing tests out of the ordinary. I'm contemplating using a certain kind of premade saltwater that we sell and just diluting it a bit as the salinity of it likes testing high.
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post #10 of 14 Old 03-13-2009, 12:09 PM
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oh and you don't have to type out my full snif youd prefer not to lol i'll respond to just about anything, shadowcat, cat, my name's tiffani if you'd prefer to use a variation of that, i'll even respond to hey you :-p
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