i used pool filter sand. and well not every pool filter sand is just sand.
i remember when i first added it, the water tasted funny. (i dont usually taste my tank water, i was making a sipon the old fashioned way)
then testing the prams. the ph was 8 kh 80ppm and gh 10ppm
which is sooo far off my tap water that i knew something was wrong.
called company and they add a chemical to regulate water ph and to suck up "ammonium ions" or something.
i remember when i first added it, the water tasted funny. (i dont usually taste my tank water, i was making a sipon the old fashioned way)
then testing the prams. the ph was 8 kh 80ppm and gh 10ppm
which is sooo far off my tap water that i knew something was wrong.
called company and they add a chemical to regulate water ph and to suck up "ammonium ions" or something.