pH at 8.2 question - The Planted Tank Forum
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post #1 of 4 (permalink) Old 05-01-2020, 02:35 AM Thread Starter
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pH at 8.2 question

So I have a 20 gallon long that has a pH of 8.2 (actually someplace between 8.0 and 8.2, hard to read the exact color on the API test). I'm trying to raise some Cardina shrimp, so ideally the pH would be closer to 7.0. All the other parameters, listed below, are good. It is a heavily planted tank, about one month old. All the tests are run using API bottle tests.

Any idea why the pH would be where it's at?

Source Water - Rain water with Salty Shrimp mineralization. The pH of the rain water is 6.5, everything else is 0

Tank water
Ammonia - 0
Nitrate / Nitrite - 0
Phosphate - 0
Gh - 6
kH - 5
TDS 192

Substrate is black diamond blasting sand
One airpump gently rippling the top (not too much aeration)

No driftwood or other stones

There have been a few chili rasbora in the tank as it cycled but no major bioload
Lighting is Twinstar 650 on a 6 hour time cycle

When I set the tank up a month ago, the pH was around 7.2. I didn't pay much attention to the pH the first two weeks and then was surprised to find it at the current level.

The plants are all healthy, no dying leaves. The fish are fed sparesly every other day.

Any ideas? Does Black Diamond affect pH ?

Thanks,
Paul
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post #2 of 4 (permalink) Old 05-01-2020, 03:38 AM
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Is that salty shrimp gh or gh/kh that you are using? I'm guessing gh/kh here.

You sure that gh reading is correct? Both the kh and pH readings go together but unless you got a bad batch of salty shrimp that gh reading doesn't make sense. Salty shrimp gh/kh is a 1 to 0.5 ratio of gh:kh

Honestly, if caradina is your goal I would ditch the gh/kh and just use gh+. If you want alittle kh insurance than just a little bit of baking soda does the trick. But really gh is the key.

I keep my crs in 1kh / 6dgh water.

Bds usually is inert.

From one Paul to another, lol

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post #3 of 4 (permalink) Old 05-02-2020, 02:13 AM Thread Starter
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Excellent point! I will get some.
Thanks,
Paul
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post #4 of 4 (permalink) Old 05-14-2020, 08:30 AM
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SaltyShrimp

I just started using SaltyShrimp - Shrimp Mineral GH/KH+. i had an ammonia spike right after adding this to my tank to raise the ph from 6.9 to 7.0, is this spike temporary and why? My ph went up fine from 6.9 to 7.0 but so did my ammonia. Its a new cycled tank. Does this product have an effect on ammonia/nitrate levels or have an effect on an ammonia/nitrate meeter? Right after using a tiny bit of this, my Ammonia meeter started showing high ammonia.
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