pH changes - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 11 Old 01-16-2009, 01:50 PM Thread Starter
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Unhappy pH changes

yesterday i used pH down to change the pH of my tank to 7.2. I checked it again today, and it was more basic. Does pH revert back to it's orginal state if you dont keep adding pH down?

my only other idea is that i have a rock in the tank that is slightly dyed blue because of when i treated the tank for ich. is it more likely that that is affecting my tests?
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post #2 of 11 Old 01-16-2009, 02:38 PM
Anyone would need more info, what was your ph before and how did you add the ph down? Also what are your water parameters?
Whats your stock?
Meds do affect your tank water, did you run clean carbon or chemi-sorb to remove med after treatment?You should if you haven't. No you shouldn't need to continuously add ph dowm.NOTE that you should only lower ph by .2 each 24 hours, to reduce stress or even shock.
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post #3 of 11 Old 01-16-2009, 07:53 PM
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pH down is the devil's snake oil. Throw that to the bin. You do not need to fiddle with your pH. Do you have any reason to do so?

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post #4 of 11 Old 01-16-2009, 09:16 PM
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I agree with lupin. There are good ways to lower ph and chemicals is not one of them. Also, you said you lowered it to 7.2? If anything, you would want to go the other way. Platies like water with a ph range of 7.0-8.2, so it would be fine to leave it alone right where it is now. If you should ever feel like you need to adjust your ph in the future: Corals and certain rocks will increase ph while driftwood and peat moss will lower ph. Using chemicals is going to start a war in with your water that you more than likely will not win.

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post #5 of 11 Old 01-17-2009, 08:41 AM
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And, just to add to what has been said, most of the time the chemicals don't work on water with a high pH. This is because most likely if your water has a high pH, it is probably also relatively hard. That means that it has more buffering ability, so the pH will almost always revert to normal after the addition of chemicals.

20 gallon long: 3 adult Neolamprologus similis + about 11 fry of various ages; low light planted tank
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post #6 of 11 Old 01-17-2009, 11:39 AM
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And, just to add to what has been said, most of the time the chemicals don't work on water with a high pH. This is because most likely if your water has a high pH, it is probably also relatively hard. That means that it has more buffering ability, so the pH will almost always revert to normal after the addition of chemicals.
This is one reason i switched to r/o . I lower mine t0 6.8 & 6.4( i use peat for this one) and i will be swutching to blackwater expert in the other one, because the ph/ down is difficult to use ,well in hard water.I keep mostly tetras and chocolate gouramis and dwarf gouramis.
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post #7 of 11 Old 01-18-2009, 11:07 AM Thread Starter
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I had some neons in the tank with my platys, but they died. The fish store said i should try changing the pH.
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post #8 of 11 Old 01-18-2009, 12:18 PM
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I had some neons in the tank with my platys, but they died. The fish store said i should try changing the pH.
Sorry your fish died, was it because you changed thier ph or no? I read some research stating that tetras loved soft, acidic water, i never had soft water but theyve been fine for a long time. I just cant ignore the optimal clause im seeing moreand more.i'm trying blue neons and purple danios and using soft acidic lowered by blackwater expert. i'll post as to thier wellness.
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post #9 of 11 Old 01-18-2009, 12:37 PM
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I am thinking about adding a small-medium size piece of driftwood into my 32g...
My ph in my 32 flucuates between 6.5 and 7.2...
Should I not add the driftwood ?Would it lower my ph even more?

My 5foot, 56g Tank
2 Madagascar, 2 Bosemi and 1 Millenium Rainbowfish
9 Tiger Barbs
1 Weater Loach, 6 Zebra Loaches
1 Rainbow Shark
1 Raphael Catfish
My 55g
1 Siamese Algae Eater
11 Otocinclus
4 Burmese Zebra Loaches
1 Black Angelfish
1 Banjo Catfish
Lots of shrimp
My 70g
1 Siamese Algae Eater
4 Peppered Corydora, 1 Green Corydora
2 Wood Shrimp
3 Red Eye Tetra
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post #10 of 11 Old 01-18-2009, 12:44 PM
Lets try to get back on track, lots of nay sayers here. Down to 7.2, what was it ? It seems as of you have very hard water, thats difficult to lower. Ph down is tricky. I now use black water expert( if you use carbon it wont discolor your water,or kill plants) at half or less of a dose , this takes some trial and error, i used a 1g container of fresh dechlorinated wtaer, added half, the dose then in a different one added even less, i found my dosing after a day of playing with water. I think it was worth it, i can no longer stand the guess work of ph down.if you decide this is what you want if you have any questions start a new post, i'll check back.
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