Tropical Fish Keeping - Aquarium fish care and resources

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-   -   Tap water testing (http://www.tropicalfishkeeping.com/beginner-freshwater-aquarium/tap-water-testing-12664/)

Busgod 03-07-2008 12:24 PM

Tap water testing
 
Is it common to get several different readings on tap water?

Hot & Cold water tested @ ph 7.5 ammonia 0 nitrite 0 Nitrate 0

but I read here to let it sit out over night and test so I did

water tested @ ph 6.5 ammonia .25 nitrite 0 nitrate 0
got me thinking what would happen if I let it sit out for another 24 hrs
water tested @ ph 6.5 ammonia .50 nitrite 0 nitrate 0
I let it sit out for another 24 hrs
water tested @ ph 6.5 ammonia .50 nitrite 0 nitrate 0
seemed to stablelise @ those readings

Second question Is why the big drop In PH and does air quality effect the readings or is it just the way the city prepares our drinking water?

Third should I do the same test using water conditioner( I use aquaSafe ) or is there a better product ?

Lastly if I had to use non tap water it would take 41 gallons a week to do 15% water change, Is there a filtering system out there that I could use to filter the tap water before i use it?

fish_4_all 03-07-2008 01:07 PM

Re: Tap water testing
 
I have heard stories of pH changing 0.5 points from leaving it over night. Both up and down. I would suspect that CO2 concentration is a big reason for the changes. My water doesn't seem to change if I leave it or not.

Ammonia can gas off or can go up depending on dissolved solids or organics in the water. Same with nitrites I guess.

Prime is supposed to be one of the best conditioners to use and the cheapest. I use Aquasafe without a problem. I have never tested my tap water after adding Aquasafe, might be interesting to see if there is a chnange in any parameters.

R/O filters will do a good job of removing everything in your tap water. Basically take it back to pure water. I am not sure if they will effect the pH or not nor CO2 concentrations.

Busgod 03-07-2008 01:18 PM

thanks fish_4_all ill check into r/o filter

will run test with conditioner let everyone know results

Holly 03-07-2008 09:26 PM

I've noticed that the ph of of my tap changed from 6.4 to 7.4 in the past 3 months.


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