Soft, flexible silicone will not dry out or harden. Lasts much longer than ordinary vinyl tubing and is kink-resistant. Standard size airline tubing for air pumps, airstones, action ornaments, etc. Inside diameter of tubing is 1/8".
Top Fin® Silicone Airline Tubing
 8 ft. long
$1.99

Flexible, vinyl airline tubing for air pumps, airstones, action ornaments, etc.  Standard size 8'L and 25'L have inside diameter of 3/16".  The mini 6'L tubing comes with four airline connectors, for connecting both standard and mini tubing.
Top Fin® Airline Tubing - 8 ft. long
$1.39

Airstones assist in maintaining even water temperature and circulation when powered by an air pump. Porous stones distribute air evenly, which is healthful for fish as gases are dispersed through the water surface. Attaches to mini or standard airline tubing (not included). Each airstone measures 1"L x .5"W.Airstones should be routinely changed and cleaned. A clogged air stone will create backpressure, which will shorten the life of your air pump. To test it, simply blow through it. If you can't easily blow through the air stone, neither can the air pump.
Top Fin® Airstones with Nozzles
Pack of 6
$2.99

These durable Bubble Walls make it easy to create a mist of beautiful bubbles in your aquarium. They're constructed of tough Polycyl material, which resists clogging. However, if they do become clogged, they can be easily regenerated by puncturing tiny holes with a pin or needle. Algae accumulation can be cleaned with a soft bristle brush. You can join multiple bubble walls with the attached connectors, or they can be cut with a razor blade to divide or shorten.
Top Fin® Bubble Wall  - 10"
$3.99

Gang valves let you regulate air flow via dial controls on multiple airlines. Rust-proof plastic gang valve hangs on back of aquarium with clips at top to neatly organize tubing. Choose from 2-, 3-, or 4-way valves. Each are 2.75"H, with 1"W opening to hook onto tank.
3-Way Top Fin® Plastic Gang Valve
$2.39

Brass T-valve allows you to run two airlines to ornaments or airstones from one air pump. T-valve is 1.25"L x .75"W.
Top Fin® Metal T-Valve
$1.29
 

Imported from France, Rena Air pumps utilize sleek European design to trap vibrations caused by the motor. The innovative use of expansion chambers, curved casing and tight fitting base makes Rena Air the quietest air pump yet. High pressure enables them to maintain optimum flow rate. UL and CUL approved.
Rena Air Pump Model 50 - for up to a 10 gallon tank, 1 outlet
$9.99

Imported from France, Rena Air pumps utilize sleek European design to trap vibrations caused by the motor. The innovative use of expansion chambers, curved casing and tight fitting base makes Rena Air the quietest air pump yet. High pressure enables them to maintain optimum flow rate. UL and CUL approved.
Rena Air Pump Model 200 - for up to a 30 gallon tank, 1 outlet
$24.99

Imported from France, Rena Air pumps utilize sleek European design to trap vibrations caused by the motor. The innovative use of expansion chambers, curved casing and tight fitting base makes Rena Air the quietest air pump yet. High pressure enables them to maintain optimum flow rate. UL and CUL approved.
Rena Air Pump Model 400 - for up to a 150 gallon tank, 2 outlets
$46.99

Each air pump is covered by a manufacturer's limited two-year warranty. Pumps are 115V 60Hz and UL-approved for both fresh and marine water.

Tetra Whisper® Air Pump 10 UL
$9.99
Tetra Whisper® Air Pump 40 UL
$18.99
Tetra Whisper® Air Pump 100 UL
$35.99