Aerating Equipment (Con’t) 
MARCO PUMP: The Most Dependable Pump 
_ Designed and built to withstand hard serv- 
ice. Consumes less than 20 K.W.H. per 



MODEL A—Will operate 1 filter, 2-3 aspira- 
WOTS, ya 5, iar oeceun eis to aisle Seaswakecn ee ee ieee $25.00 
MODEL B—Will operate 2 filters and 
2- SmeASDILALONGHe ie rien OU ACU 
MODEL B-2—Will operate 2 filters and 
6=SM@ASDILa GOS moe. cherie eee $35.00 
THE AIR CHAMP: 
Long Life, Noiseless, Economical (uses only 
10 watts). Will operate 1 filter and several 
ASDILALOLS marge etn ae ee aa ats $14.50 each 
AQUARIUM FILTERS 
JUNIOR 
Made of clear plastic materiak An excel- 
lent filter for inside the aquarium. Easy to 
operate. Complete with activated charcoal, 
Hit erawWOO lan Ge pebblessaemmeiemieriic $3.85 each 
SENIOR 
An all-celluloid filter. It can be used either 
inside or outside of the aquarium. Complete 
with activated charcoal, glass wool, and 
DEDDISS Wot cteier sce a aerate sicueters cle sce eeetereuehoe $6.75 each 

AIR RELEASERS 
Aquarium Air Releasers made of carborundum. Will release air in 
TINE) DUD DISS eee cae eee tier aie ramets toll hat ce ere tetitepene ates ones 45¢ each 
Metal Air Releasers, nickel plated with plastic tubing......... 65¢c each 
Marcon BallgO:;MistwReleasereean cine ei eee cine sien eer ac $1.50 each 
Ornamental Diver with carborundum air releaser at top...... $1.75 each 
CONTROL VALVES 
Needle valves to control amount of air flow 
COMPAS DIT ALOD ie wivre avorcyeieeicle hace acre time 75c each 
Marco Control Valve ...............$1.00 each 

RUBBER TUBING 
For connecting air release to pump. Laboratory type. ....10c per ft. 
PLASTIC TUBING: 
For connecting air releasers in the aquari- 
um. It can be bent to any desired angle. 
- 
MAT oat Ao Miles eect aeate tesa ieGere aie fares ae 15c per ft. 
Tee and X Connecting units for distribution of air ............ 35c each 
HosenClampse ea te arn eet noo Ene ice ooe each 
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