I had to seperate the critters in my aquarium. So some zip ties and plastic canvas from the craft store a poof a boy side and a girl side. I also used the Zip ties to hold the divider to the top of the tank. You get 200 ties that are 8 inches long. The white color blends in with the canvas . Easy to use and pull. Tie anything together. #Rankboosterreveiw #Sponsored #H&HODOR https://www.amazon.com/Nylon-Cable-Ties-Self-Locking-Fastening/dp/B0745BF16P