need answer

hello all,

my Red Hump Geophagus is pregnant again. a friend and I replaced my gravel
with sand, we washed it thoroughly but there still is some dust in the
aquarium. What I was wondering about is since the eggs are in the female
geo's mouth, will the dust from the sand hurt the eggs in anyway, I was
thinking that the dust would settle on the eggs, but since she is a mouth
breeder, she is always moving the eggs around..

thanks for the help

later
Shawn