Siphon Stopper® return fitting comes with Siphon Stopper® cap, elbows, loc-line hose with 1/4" nozzle (does not come with bulkhead or 1/2" barbed elbow - see Siphon Stopper® complete return fitting which includes the bulkhead and the elbow.) This is the best solution to give your aquarium a consistent output position that is easy to manipulate water flow, and at the same time limits your risk of a backs siphon much more effectively than a check valve.

Siphon Stopper® complete return fitting comes with Siphon Stopper® cap, elbows, loc-line hose with 3/4" nozzle, 3/4" bulkhead, and 3/4" barbed elbow. This is the best solution to give your aquarium a consistent output position that is easy to manipulate water flow, and at the same time limits your risk of a back siphon much more effectively than a check valve.