AERATING EQUIPMENT 
Tricker’s Air Pump and Chill Breaker 
This new aerating pump is enclosed in a glass tube, 8 
inches long and 1 inch in diameter, and it is to be placed 
inside the aquarium. 
It is noiseless and only consumes 5 
watts of electric current. It tends to 
keep the temperature of the aquarium 
a few degrees above room temperature 
thus acting as a chill breaker as well 
as an aerator. 
This new aerator is guaranteed for 
six months from date of purchase, 
against all defects, provided that it is 
properly handled. 
It is an outstanding, low-priced aer- 
BUN SLPUIM Det ety eee cote $3.50 

MARCO PUMP: 
Designed and built to withstand hard 
service. Consumes less than 20 K.W.H. 
per month. 
MODEL A—Will operate 1 filter, 2-3 
ASPITA LOLS wee Mites ace eee $25.00 
MODEL B—Will operate 2 filters and 
a=SSASPILALOLS mierda ianiclcon eae 30.00 
MODEL B-2—Will operate 2 filters and 
G=S PASDIraCOl set. 0. ar cee 35.00 

AQUARIUM FILTERS: 
An all celluloid filter. It can be used 
either inside or outside of the aquari- 
um. Complete with activated char- 
coal, glass wool, and pebbles. ..$6.75 ea. 

P Aquarium Air Releasers made 
ie of carborundum. Will release 
gl air in fine bubbles. B—45c each 
A—i5c each 
D C Marco Ball O’Mist releaser .... 
cece ited ivatans tet ede $1.50 each 

Needle valves to control amount of 
air flow to Aspirator.......... 75c each 
Marco Control Valve........ $1.00 each 

RUBBER TUBING: For connecting air release to pump. 
Laboratory type ............ 10c per ft. 
Tee and X Connecting units for distri- 
butions of aires... 6 ees eeoee ees 35c each 
Hose -Clampsivass sere aoite teeter 40c each 
C11] 

