beldt*s aquarium 
SAINT LOUIS, MO 
AIR PUMPS AND FILTERS 
The 
Magnus 
Pump 
Marvel Air Plow 
The Magnus Pump occupies a 4-inch space. 
Shipping weight, 3 lbs. Will deliver plenty of 
air for 1 to 5 tanks. It is sold with a 6-month 
guarantee. Uses 60 cycle, 110 to 120 volts A. C. 
current. This pump can be used with any 
filter listed in this catalog. 
Price, fully equipped with rubber tube 
and outlet for one aquarium.$8.85 
All-celluloid Filter 
Daily capacity, 300 gallons, 
complete with filtering material, 
$4.50 
Acme Junior Filter 
When the water be¬ 
comes milky from 
overfeeding or gets 
otherwise stagnant, 
it is necessary to fil¬ 
ter the water. This 
filter is designed for 
smaller aquariums. 
Price, each . .$1.50 
Marco Air Pump 
- - 
White Mist Air Pumps are guaranteed for 
one year. The factory guarantees all ship¬ 
ping costs if the pump fails to operate prop¬ 
erly during this time. This pump has made 
enthusiastic friends and every purchaser is 
more than satisfied. The order number must 
be given with all claims. 
Price, with glass top.$0.90 
Price, with solid top. 7.00 
Shipping weight 3% lbs. Floor space 
7%x4 inches. Height 3% inches. 
Will operate from one to three tanks. 
Special “White Mist” folder sent free on 
request. 
Acme Thermalator 
A small aerator to be used in aquariums 
up to 20-gallon capacity. It can be attached 
to the top frame of any aquarium. It must 
be kept above water level and works entirely 
automatically. It pumps fresh air into the 
water at Intervals of about twice a minute, 
operates on 2c per day and makes it possible 
to keep more fish in an aquarium in healthier 
condition. 
Model A 
12 Releasers.$15.00 
Model B 
24 Releasers .$ 20.00 
Model B-2 
36 Releasers .$25.00 
A fine piece of workmanship; a very popu¬ 
lar pump. Will supply ten outlets. Takes up 
floor space, 6x4% inches. 
Standard Model 
Shipping weight. 8 lbs. 
Provided with a 6-foot extension cord and 
can be plugged into any convenient socket. 
A. C. current, 110 volt. 
Price, each .$1.50 
Celluloid Tubing 
3/16 in. diameter, 34 in. long.each.$0.45 
5/16 in. diameter, 38 in. long, each.75 
Page 35 
Supreme Air Pump 
Junior Modei 
60-Cycle—110 Volts 
A. C. Current 
Price—$8.50 
Here is the pump for the average fancier. 
It will supply 10 outlets with plenty of air. 
It has 12 lbs. of stalling pressure and will 
operate on 3 to 4 cents per day. Shipping 
weight, 8 lbs. A real honest-to-goodness 
VALUE. 
Supreme 2 Cylinder Air Pump 
for 20 Outlets 
PRICE, $11..50 
Chromium Filter 
This filter comes complete with directions 
and all filtering material including hanger, 
inlet and outlet tubes, as illustrated. It is 
a gravity filter; hangs on the outside of the 
aquarium and returns the clear water into 
the aquarium, acting also as an aerator while 
filtering. Can be used with any air pump. 
Length Width Height 
6 4 10% 
Price ..$8.50 
Filter Supplies 
Best filtering charcoal, per quart.$0.30 
Per gallon .75 
Activated carbon. A very high grade 
filtering compound. Will filter any 
discoloration out of water and leave it 
absolutely clear. Per quart.40 
Per gallon . 1.25 
