Review on 🐠 JIH Aquarium Standard 3/16" Flexible Black Airline Tubing with Plastic Connectors – Ideal for Fish Tanks, Terrariums, and Hydroponics by Grace Brown

The description says it's flexible, but I wasn't expecting the rubber to be more pliable than most rubber bands. The problem is that wherever the hose hangs over the rim, like the rim of my buckets, it sags under its own weight and cuts off some of the air supply. I assume that over time this can almost completely cut off the airflow, but I don't want to test it. I gave an overall rating of 3 stars because they mention it's flexible and rubbery, but they mention it's for hydroponics and personally I don't see it unless you can use a totally straight tube.