Ximat
Aquarium Advice Freak
Here's how i rinsed my sand. Put about a gallon in a 3 gallon bucked, then filled with water, and dumped the water back out...... Did that several times which got rid of a fare share of the "dust" I quit noticing a lot of dust floating after the first 6-8 weeks. I would say by far my goby is the most fascinating fish that I have, and have seen. I hate to hear you say you want to take him back. HTH