Yes. I just washed it out with water and vinegar and then dried it out with a towel and rinsed with RO. You could fill it with vinegar water and let sit for a day. Then wash it with pure RO to be sure. But the vinegar and tape water should be fine. But be sure to wipe it dry. The metals from the tap water would dry on the plastic if you let it air dry. My fish seem fine so I guess what I did worked.