These mangrove holders are ideal for holding mangroves in place in your aquarium or refugium. Simply clip one end on the rim or or top of your tank and clip the other end to your mangrove and articulate the arm to position your mangrove to your liking. One or more clips can be connected together to double or tripled the length of the holder by carefully removing the clip from the arm and attaching the the plastic connector, acrylic rod and clip from another set. This kit is designed to hold smaller mangroves and mangrove pods. It has a large clip for to mount to the tank and a smaller clip for the mangrove. The mangrove clip can accommodate mangrove stems that range from 3/8 of an inch to 6/8" diameter.