Like the other reviewer I had two identical entry ends (no cap) but that wasn't a problem for me. I have an AP300 air pump (suitable for 300 gallons of deep water) so what the heck I just hooked up the inlet line on each side! I was excited to make a little wavy design for my bubble curtain and watch my fish play with it. I lit it expecting lots of air bubbles from both ends. I. About 10 inches on each end bubbled up like crazy. The other 20 inches are in the middle. hardly a trickle and then nothing at all in the middle. I thought ok it's not designed to let air in at both ends so I attached my own plug to one end. the same, with bubbles at both ends and a nada in the middle. I was very excited to try these over foot long air stones but unfortunately I think my search continues. I'll be back.
Sink filter Prio New Water Start Osmos OU380 white
79 Review
KEDSUM Quiet Rechargeable Battery-Operated Aquarium Air Pump With Dual Outlets - Perfect For Fish Tank, Outdoor Fishing, Transport, And Emergencies
28 Review
๐ฟ Enhance Your Freshwater Fish Tank with Greenpro Java Fern on Driftwood Live Aquarium Plants
27 Review
Aquael Fan Filter Mikro Plus
35 Review
Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review
๐ U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review
Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
37 Review
๐งฒ Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review