i just got my 125 running it has white silica sand and a bunch of rocks. I used bio spira and a entire filter off my 55gal. i have 2 tiny yellow labs and a ob abd a powder blue peakock. over the past five days my ammonia has not been measurable. maybe .005. i use a aquarium pharmisutical test kit (liquid) and the color is yellow with the slightest tint of green that you would need to stare at for about ten minutes to see. does that meen the bio spira and old filter worked? Any ways my white sand has a tinge of yellow greenish tint to it in some places. could this be bacteria?
