Dstarr Posted February 1, 2022 Share Posted February 1, 2022 (edited) I am starting 6 new 10 gallon tanks to try my hand at breeding a few guppies. My PH out of the tap is around 6.3 and I am told guppies really want 7.0 to 7.5. I want to run bare bottom tanks so could I place small bags of crushed coral in the bottom of each tank and effectively raise the PH safely? TIA Edited February 1, 2022 by Dstarr Link to comment Share on other sites More sharing options...
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