Join Date: May 2011
Location: Buchanan, Virginia, USA
If dirt under the gravel does not hurt, why carefully prepared liquid would cause the damage? We can experiment, starting with ashes, which is rich with essential minerals, calcium and potassium are plentiful in it. I already tried it carefully. So far, everything is fine in the tank. Of course, calcium and potassium are still not all what is needed. Thank you for the replies.