This gravel guard cover can be used to help block most light from entering the bell siphon area, reducing algae growth. It has a small hole in the center so you can quickly peek inside or lift it with your finger. The botton has a rim to help prevent it from sliding off of the gravel guard. This is designed to fit over a standard schedule 40, 6" PVC pipe
This is a 3D printed part made with PLA plastic. PLA is a plant-based plastic and may degrade over time.
THIS IS AN EXPERIMENTAL PRODUCT! Bigelow Brook Farm LLC makes no implied or expressed warranty about this product's functionality, safety, or lifespan.