8 окт. 2013 г. · The ones that we had tested and found to be safe for freshwater were Lava Rock, both black and red, Slate, Most Feldspars, possibly some exceptions, Granite( ...

28 февр. 2015 г. · Through research I have found that the following types are safe/won't raise pH, etc: Quartz, Granite, Slate, Sandstone.

29 апр. 2005 г. · Most pumice is inert. however, "tufa" rock can sometimes be pumice, but sometimes it is a manmade material that is calcium carbonate rich, and will wreak havoc ...

27 окт. 2017 г. · Dragon Stone is inert and will not influence your water chemistry, making it the ideal layout material for any aquarium. " Might be worth ...

18 авг. 2020 г. · Regular Estes aquarium gravel, sand, Flourite, Eco Complete are all good choices depending on your set up and what you want to keep (both plant and animal wise ...

14 нояб. 2014 г. · Lava rock, basalt, granite, slate, quartz, flint, quartzite, and obsidian are all perfectly safe. There are countless other types, those are just some common ...

28 авг. 2019 г. · There are highly successful tanks using inert and active substrates. It really depends on preference and the goals you have for the tank.

8 апр. 2014 г. · Limestone will generally raise your hardness and pH. Most holey rock and lace rock will probably be limestone based, and also raise pH and hardness.

5 февр. 2020 г. · Some people ONLY recommend inert rocks which will not affect water parameters. I believe that this is the better safe than sorry approach.

26 июл. 2012 г. · Lace Rock is usually a form of limestone that has been partially eroded due to water. It will continue to dissolve in your tank, raising the ...