Zebra Rocks - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 03-29-2009, 09:22 PM Thread Starter
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Zebra Rocks

Will zebra rocks raise the pH of my water? I want to know this before using them.

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post #2 of 5 (permalink) Old 03-29-2009, 11:28 PM
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They raise my gH from 2 (tap) to 8 (tank) every week. Usually tank's around 5 after a WC so not a huge, huge change--my shrimp still breed consistently, but I'm thinking of swapping them out for some other stones eventually.
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post #3 of 5 (permalink) Old 03-30-2009, 12:00 AM
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my zebra rock has no affect on my water. my rock is composed of quartzite and basalt. have you placed vinegar on it to see if it bubbles?

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post #4 of 5 (permalink) Old 03-30-2009, 12:12 AM
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Mine are ADA brand, not the stuff you find in LFS's w/ consistent black/white striping, though I've had problems w/ some of those (not all) in the past too.
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post #5 of 5 (permalink) Old 03-30-2009, 12:33 AM
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Vinegar may not be strong enough to get a fizz in some rocks which can slightly raise pH/kH. Hydrochloric acid is a better choice to test with IMO.
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