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post #1 of 9 (permalink) Old 12-21-2015, 09:35 PM Thread Starter
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Ph

Tested my ph 7.6 my high range ph 7.8 Im guessing they are both the same thing, what is the best way to lower my ph on a 90 gallon?
thanks
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post #2 of 9 (permalink) Old 12-21-2015, 09:38 PM
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Tannins lower pH, driftwood releases it. Co2 lowers ph. I dont recommend using buffers, I have a ph of 7.8 and I keep south american fish that prefer acidic water

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post #3 of 9 (permalink) Old 12-21-2015, 09:52 PM
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Don't be concerned about pH unless you have plant problems and are trying to understand what might be the cause of the problems. Most fish will do well in a pretty broad range of pH readings. Most water companies add something to the water to raise the pH to reduce erosion of the water plumbing. If you test the water a day after it comes out of the tap the pH will usually be lower, because what they add to the water dissipates over time and exposure to air.

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post #4 of 9 (permalink) Old 12-21-2015, 09:53 PM Thread Starter
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I have a planted tank with tropical fish, I dont know if a ph that high would be ideal!

tap water 7.8, tank water 7.8
I saw that some plants dont do well on high ph!

Last edited by Darkblade48; 12-22-2015 at 01:44 AM. Reason: Please use the edit function for back to back posts
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post #5 of 9 (permalink) Old 12-21-2015, 09:58 PM
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Originally Posted by bigtroublenj View Post
I have a planted tank with tropical fish, I dont know if a ph that high would be ideal!
What fish are you keeping?
RO water is generally used to soften water which is more an important parameter than pH.


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post #6 of 9 (permalink) Old 12-21-2015, 10:10 PM Thread Starter
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Quote:
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Quote:
Originally Posted by bigtroublenj View Post
I have a planted tank with tropical fish, I dont know if a ph that high would be ideal!
What fish are you keeping?
RO water is generally used to soften water which is more an important parameter than pH.

tropical community fish.
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post #7 of 9 (permalink) Old 12-21-2015, 11:15 PM
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tropical community fish.
That doesn't help. What species?

My guess is, everything is fine and leave it alone.


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post #8 of 9 (permalink) Old 12-22-2015, 09:52 PM
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It is very desirable to keep the change water the same for every water change, and to have that water be about the same as what was in the tank - not putting high GH water in a low GH tank, or high KH water in a low KH tank, etc. There are not many fish that will be bothered by pH, whether high or low, if you don't dump in water that has a big hardness difference from that in the tank.

When you try to adjust the hardness or pH of the change water you start a never ending problem. Every time you add water you need to adjust that water the same as you did the first time. That can become a really big nuisance.

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post #9 of 9 (permalink) Old 12-23-2015, 05:10 PM Thread Starter
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Got it, so its better not to mess with the ph!
Thank you guys
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