Standard Thread Bulkhead Fitting (1 Inch) Batfish Round shape provides a broad

Round shape provides a broad unobstructed viewing area

some like squiggles over its face

1 Inch Straight Barb Adapter for Aquarium Plumbing

mud filtration

Standard Thread Bulkhead Fitting (1 Inch) Batfish Round shape provides a broadStandard Thread Bulkhead Fitting (1 Inch) Standard Thread Bulkhead Fitting (1 Inch) is a heavy wall PVC bulkhead fitting for creating a watertight pass through in aquariums, sumps, reservoirs, and filtration systems. It accepts a matching threaded fitting on the tank side and slip pipe on the outside, making it useful for many custom aquarium plumbing layouts. 1 Inch Standard Thread Bulkhead for Drains and Returns The 1 inch size is a popular option