10gReef Posted November 25, 2012 Share Posted November 25, 2012 so I'm building a paludarium, half aquarium half vivarium. I picked up a bunch of limestone from around the lake and pressure washed it and some limestone gravel, my concern is how it will affect the water. any one have experience using limestone in freshwater tank? Link to comment Share on other sites More sharing options...
Timfish Posted November 25, 2012 Share Posted November 25, 2012 Any limestone or calcium carbonate decorations will keep the pH of freshwater high around 7.6 - 7.8. Works great in saltwater though. Link to comment Share on other sites More sharing options...
Woods Posted November 25, 2012 Share Posted November 25, 2012 Depending on what you want to keep in the Freshwater, the limestone can be very good. It will keep you ph at last 7.8. mine was always around 8.3 - 8.6 when I kept it with my African Cichlids. Link to comment Share on other sites More sharing options...
jestep Posted November 26, 2012 Share Posted November 26, 2012 My tap is around 8.6 after sitting a day in a barrel. I can't imagine what it would be if I had limestone in my tanks. There are some plants that do well in very basic water, but most like some acidity. It should work, but definitely do research on the plant species if you want them to thrive in higher ph water. Annubias and java {whatever} should be fine, but you may have problems with plants that live in more acidic water. Link to comment Share on other sites More sharing options...
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