FOU THE ABU V^INDEO e 
TROPICAL FISH AERATION AND FILTRATION EQUIPMENTS 
WHY USE ARTIFICIAL AERATION ? WHY FILTER AQUARIUM WATER ? "Becaurc the concentration 
of fish and plant life in an aquariijin is much higher than is ever found in the 
natural state. Therefor artificial aids are necessary to maintain a satisfactory 
oxvgen condition and to remove impurities caused by decaying plant matter and the 
natural elimination of the fish. The wise aquarist will avail himself of all artifi¬ 
cial aids possible in order to assure himself that the v/ater in the aquarium will 
alvmys be acceptable to the most delicate fish" 
MARCO VALVES MARCO PRODUCTS 
.85 CENTS EACH 
M 1P 
- ‘ \’asc.' 
.51 Oj 
M - del B-2 
36 Releasors 
S26 OD 
The ’L-.rco Valve is a little 
higher priced than the ordinary 
commercial valve, but comparison 
will quickly show its super - 
iority. Fine adjustment and per¬ 
fect control of the air flow 
are assured with Marco Valves. 
gore ’.jnp u .a:n. h 
or.yg onr.i ■ .. in ‘-■i' 
Aqua:' ms £•'/' :-’r>ouii operate 
smoothly and efficiently.lt 
should be self-.tarting,non¬ 
reversing and built to give 
yearn ■!’ service. 
10 -inoh-.u.- •' 
12 -inch- .. 1.00 
A good filter removes 
all foreig I matter and 
purifies the water by 
eliminating all decayed 
organic matter. 
WITH PLATE GLASS TOP 
$9.50 
THE LATEST AEPJlTION DE’.'ICE I which 
works on an entirely new aerating 
"ibrating principle, that consumes 
very little current. This pump working 
24 hours a day for 30 days, uses only 
.06^ worth of electricity. Operates 
1-8 releasers, or 1 filter and 2 S'T.'SO 
releasers. Never needs oiling; abso - • 
lutely guaranteed for one year; does 
not make any noise and does not inter- IVORY LACQUERED CASE 
fere with your radio. $ 7.50 
WHITE MIST AIR PUMF 
AFE^AT 
SPECIFICATIOMS 
F. O. B. 
San Francitcp 
(Shipping Wt 4 Lbs. PP 
.50^ to anypart in the 
United States.) 
Type 
Volts 
Cycles 
Watl s 
Pressure 
Air -’I w 
—Vll t 
105 - !20 
- 1 . 6 .-' 
-4ilR 
30 cu.in 
(Measures 4x4x8 in. 
■•t rubber tubing, 1 
.1 >-.e ■ releaser arjj 1 
■/:, ve 00 Extra. ) 
