if my hands are dirty or i know ive been touching chemicals or something ill wash before. Usually i dont before or after tho. main tanks salt, figure its good for yah lol .
The question is how many gallons of fish water already? Gross! One time, after some priming accident of less than a cup, I found a dead rotting ranchu in the sump overflow. Kill me then and there! That is why I switched to the gravity method!