mgkaelen
Aquarium Advice Freak
i know that blackboard chalk (uncolored) is calcium carbonate. i can i used crushed up CHALK to regulate my pH? i have read past threads and like so many others, mine has crashed considerably (tank has been established over a YEAR with no problem EVER). i have checked my county's water report and it seems that my pH averages 7.5; should this be accurate with the test of me waiting 24 hours to get it checked? the hardness also says the average is 104. i have no idea what this number means, but i've seen that KH is necessary in having a stable pH. i haven't had my tank speficially tested for KH, however. 104 is just what comes out of my tap water, allegedly. anyhow, just wondering what the deal with chalkboard chalk is. thanks