THE FAMOUS NEW FRENCH “INVISIBLE” 
FILTER-AERATOR 
A scientific instrument developed in France. Place 
the filter on the bottom of aquarium toward the back 
and cover it with aquarium grit. Attach the air hose to 
the air stone, thus creating suction through the filter. 
9¥%2 in. long, $3.75—1134 in. long, $4.00—14 in. long, $4.25 
FILTERING SUPPLIES 
Activated Charcoal—one pint ......................... $0.60 
ONEGECUALTUsS ee RE 1.00 
Glass Wool, finest available, package....... laa sat 25 
Pebbles or pearl chips, per pound...................... 20 
AIR RELEASERS 
Ornamental Diver with Treasure 
Chest and Air Releaser as 
illustrated re iee. chipchtcee sok $2.50 each 
CARBORUNDUM AIR RELEASER. Will disperse 
alr in’ fine bubbles: arenas eke ees eS 45c each 
METAL AIR RELEASER. Nickel plated with long 
lasting. plastics tubin@ 3 fissile ems 75¢c each 
MARCO BALL O’MIST. One of the best air re- 
CASEI SH tre a a Pty oe A thy Goan coe ae $2.25 each 
CONTROL VALVES 
Needle valves to control amount of air flow 
LOPASDILAULO Geass cee iad, cherokee te 85c each 
Marco;Control- Valve) @. mass tos ee. $1.25 each 
RUBBER TUBING 
For connecting air release to pump. Laboratory type. ....16c per ft. 
PLASTIC TUBING 
For connecting air releasers in the aquarium. It can be 
DOLtato AN Ver GESITEGMAlIRlGr nit, Haire c/o sc orci. che eet ule oc on 10c per ft. 
PLASTIC TUBING 
14” size for syphoning water or dirt from bottom of 
QUAM ee erty test alee iashe alert cp att eae nie iter es oc cigs ee ss 22c per ft. 
Tee and X Connecting units for distribution of air ............ 40c each 
RIORE | CIRM OS eran iin wite ee hieca nce wore ele es tow en eesee 400 each 
