There is no more worrying about submerged dosing tubes when using the new Tube Holder. This item can organize up to 5 dosing tubes and is designed to have a tight fit for the tubes to almost never become lose and ruin your carpet or flooring with chemicals. It is one of the simplest, user-friendly Tube Holders for hobbyist to install. It is easily mounted with a thumb screw wherever you feel fit for your tank. This small item can also be installed into your sump or All in One (AIO).