HIGH Tap PH

  • 6629
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6629 created the topic: HIGH Tap PH

i tested my tank today and my PH was maxed on high range. My tap is at 8.2. any tips on how to regulate my PH other than buying treatment?
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  • Nina_W
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Nina_W replied the topic: Re: HIGH Tap PH

I moved your topic to the water chemistry section, it's not really an official announcement. Hope that's ok.

A high pH is perfectly ok for tank-raised oscars, as long as you keep it stable. Messing with it will more likely than not end in pH fluctuations, which are far worse for your fish than a stable, high pH.

Gentle ways of lowering it includes using primarily driftwood as decor, avoiding limestone rocks and perhaps adding peat moss to a filter compartment/your substrate.

BUT - test your KH. KH is the amount of carbonates in your water. These carbonates 'used up' when your water's pH tries to go down - so your pH doesn't go any lower, but your KH does. Eventually, your KH is all used up, and your pH crashes down to very, very low, very suddenly. It is suspected that this kills fish.

I'd venture that you have quite a high KH.

So, to safely lower your pH, you must lower your KH - but not let KH get to zero.

If you're very determined to lower pH - probably the best way to do this is to change water partially with RO/DI water. Start off slowly, and build up to where you're doing half tap water, half RO/DI. This should have your KH lower, your pH lower, and most importantly, both of them stable.

Again, I'd not worry about it too much. Stable is the way to go.

My tap water is like yours, sometimes up to a pH of 9 (which is considered mild soap). With driftwood, it stays between 7.5 and 8 in Wicket's tank.
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6629 replied the topic: Re: HIGH Tap PH

Thanks. N yea don't really know how I put it in this section... But thanks for the correction. So basically sounds like drift wood is where it's at!
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Nina_W replied the topic: Re: HIGH Tap PH

6629 wrote: Thanks. N yea don't really know how I put it in this section... But thanks for the correction. So basically sounds like drift wood is where it's at!


that's pretty much it, yes :)

Driftwood also releases tannins, it colours your water a lovely yellowy-tea colour, which is a lot like their natural habitat. It stops eventually, but I have a chunk that's still releasing tannins and it's been 20 years now. Some (many, maybe even most) people don't like it, so it's better to know about it beforehand. Many who try it end up liking it, though.
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6629 replied the topic: Re: HIGH Tap PH

Is it the tannins directly that lower PH or just the wood itself? And if not the tannins are there other types of wood that would lower PH without tannins? Also can you post a pic to show me the color of your water?
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  • Darth Nandopsis
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Darth Nandopsis replied the topic: Re: HIGH Tap PH

I always used peat moss to lower PH; it's natural & safe, & I live In Philly, where the PH coming out of my tap is 8.2 to 8.5. It does stain the water a bit, though. (I put Fluval peat pellets in a HOT Magnum canister). I never had a problem w/ PH crash, but then again, I do daily WC's.

THOSE WHO REFUSE KNOWLEDGE ARE DOOMED TO FAIL.

WATER CHANGES ARE THE LIFEBLOOD OF THIS HOBBY. IF YOU DON'T BELIEVE SO OR SIMPLY DON'T FEEL LIKE DOING THEM, RE-HOME YOUR FISH, SELL YOUR AQUARIUM & FIND ANOTHER HOBBY, AS YOU WILL FAIL UTTERLY, COMPLETELY, & MISERABLY.
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  • Nina_W
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Nina_W replied the topic: Re: HIGH Tap PH

It is the tannins, to an extent, that lowers pH. Mild acidic compounds released by the driftwood (or peat moss), amongst them tannins.

I'm always happy to show off my fishtanks, but my water is currently crystal clear, because I've been doing daily water changes :silly:

So that won't help much.

Here are some pics from my tank from long ago:

and at its very darkest:

My pic of Wicket that won last month's pic-of-the-month also shows the discoloured water. It makes the water a soft yellowy colour, which you can see in the lighting there.

Since I have an excuse, here is that picture:
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  • Ohhz
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Ohhz replied the topic: Re: HIGH Tap PH

Thats an awesome photo Nina :)!
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Nina_W replied the topic: Re: HIGH Tap PH

Ohhz wrote: Thats an awesome photo Nina :)!


thanks, I sure think so :) I should print it nice and big some time.
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