Review on 🐠 Marineland PR3020 Bio Wheel Assembly Eclipse1/System 12: Top-Notch Filter Parts for Aquarium Success by Cheryl Wilson

not in a box but sent in an envelope therefore partially crumpled. I was able to mostly get the creases back in place, but I couldn't restore them perfectly. After installation, the wheel stopped and began to rotate. After some debugging, it turned out that the shaft was too long and was rubbing at the ends. I had to sand them a bit to reduce the length and everything seems to be working fine now.