Rocks, Gravel, or Sand? A Newb needs help.

AW: Rocks, Gravel, or Sand? A Newb needs help.

Hello,

i use sand from the gravel pit in my nighborhood. And it is for free.

Greetings Ingo V.
 
To get the gunk off the pieces of slate literally all I do is brush them off with a (clean, treated) tooth brush every other time I change their water.


The only problem with doing that is you will wash away your good bacteria.:eek:
 
He's not disturbing the bacteria. He's just brushing off the gunk so it can get sucked up by the siphon.
 
That 'gunk' contains the nitrifying bacteria.
 
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