Filter Floss Holder Color:Black and one branch fades to

and one branch fades to blue-violet under the actinic light

reef-safe PETG plastic

Snug-fit design keeps everything in place during use or transport

designed specifically for the Hanna Calcium Checker

Under blue light the red-orange glows warm against the cool background

Filter Floss Holder Color:Black and one branch fades toFilter Floss Holder Fits 7 and 4 Filter Sock Openings Simplify your filtration routine with the Treasure Corals Filter Floss Holder. Designed to fit standard 7 or 4 filter sock openings, this holder offers a clean and convenient way to use and replace filter floss without the mess or hassle of traditional socks. Fits standard 7 or 4 filter sock holes Makes replacing filter floss quick and easy Helps maintain water clarity and reduce detritus buildup