-Made of minute uniform-sized fused glass spheres.
-Extremely durable, long-lasting inert, nontoxic.
-High performance equal-sized air bubbles.
-Trouble free service in aeration.
-Easily cleaned, clog resistant
-Made in U.S.A.

KORDON MIST AIR AQUARIUM AIRSTONES are the highest quality aerators available for aquarium and pond keeping. They are for both general and specialized use by the discriminating aquarist who wants premium quality, performance that excels all others, and lifetime service.

Using a matrix of nearly perfect glass spheres which are resin-bonded together in a patented process to provide years of excellent service, these airstones offer new standards of performance and durability over traditional wood, fused-sand and porous-plastic airstones. While traditional airstones disintegrate or become unserviceable within a short time, MIST AIR AIRSTONES withstand deterioration and disintegration even after prolonged use. The MIST AIR glass bead construction is extremely durable. Usually the only part that will need replacing is the airstem. Any length of stiff plastic tubing 3/16" diameter can be used as a replacement.

How They Work
MIST AIR AIRSTONES are available in three porosities, with Coarse, Medium or Fine air bubbles. While all three grades are useful in fresh or saltwater aquaria, there are advantages to the three different grades besides just the bubble size. Each grade of airstone has a different back pressure which is superior dependent on usage. The Coarse MIST AIR has the least back pressure and requires the least air pressure to operate. Therefore, it will operate on the smallest air pumps with lowest pressure. The Coarse MIST AIR will work the best at greater depths were minimum back pressure is desired to provide air bubbles. The Medium MIST AIR is intermediate in back pressure and the Fine MIST AIR is greatest in back pressure. The Coarse MIST AIR requires the most air regulation when multiple airstones are supplied by the same air pump. The Fine MIST AIR requires the least regulation, and the Medium MIST AIR is in between.

Kordon Coarse MIST AIR airstone is the rugged general purpose airstone with a number of advantages. It is the easiest of the three grades to clean. Its largest bubble size is the best to remove gases (such as carbon dioxide) from the water. It is the best airstone for air columns of undergravel filters because it lifts the most water.

Kordon Medium MIST AIR airstone has the advantage of being the best compromise for size. The medium air bubbles are perferred by many aquarists for finer bubble size in fresh water.

Kordon Fine MIST AIR airstone is the marine airstone par excellence. It provides a beneficial fog of minute air bubbles in salt water just like the natural environment in coral reef surge channels. It is very effective as a sparger airstone in protein skimmers and biological waste skimmers, outperforming the old style wooden airstones. In fresh water the Fine MIST AIR has the same bubble size as the Medium MIST AIR but a greater back pressure.

Instructions for Use
KORDON MIST AIR airstones can be connected by standard 1/4" OD flexible tubing to any regular aquarium pump - from the smallest single-tank vibrator pumps to the largest commerciasl units for hundreds of aquaria. The clear stiff airstem tubing in the MIST AIR airstones is press fit into a tapered opening in the body of the airstone. The airstem can be removed by pulling it out with a pair of pliers, provided caution is taken is handling the airstone so as not to break the it. If there is air leakage around the base of the airstem, the airstem can be pressed deeper into the airstone or be pulled out and replaced. For taller aquariums the user may prefer to obtain a longer length of stiff tubing - attaching it to the MIST AIR by a short length of flexible tubing, or attaching it directly to the MIST AIR in place of the short airstem.

MIST AIR airstones resist clogging longer than conventional airstones because of the uniform airspaces between the glass spheres. They can be cleaned easily by thoroughly drying the airstones and then blowing out the dry debris. Also, they can be rinsed in running hot water from the faucet, and dried. Or, they can be soaked in mild bleach solution (four parts water to one part bleach), rinsed thoroughly in tap water, and dried before reuse.

Specifications
Manufactured exclusively for KORDON from Tegraglas , which consists of small round glass beads resin-bonded together by a special patented process.

Airstone dimensions:
Airstone length ........................................................... 1.0" (2.6 cm)
Airstone diameter ....................................................... 0.5" (1.3 cm)

Airstone specifications:
Density........................................................................ 1.6 grams/cc
Flexural strength....................................................... 2000-4500 psi
Void volume........................................................................ 27-32%
Heat resistance ....................................... 270F (132C) continuous
450F (232C) short term

Pore diameter (maximum):
Coarst MIST AIR .............................................................175 microns
Medium MIST AIR ....................................................... 90 microns
Fine MIST AIR ............................................................... 40 microns

Butyrate airstem dimensions:
Airstem length............................................................... 1.5" (3.8 cm)
Airstem OD............................................................... 0.195" (0.5 cm)
Airstem ID................................................................ 0.135" (0.33 cm)

Kordon Mist-Air Air Stones (Coarse)