BELDT’S AQUARIUM, INC. 
ROBERTSON, MISSOURI 
Tene RRR ane 
No Noise Magnetic Action 
Automatic Heater No. 7 
Solid Silver Contact Points 
with Condenser 
This heater is built into two 
8-inch glass tubes; 150 watts will 
heat aquarium; from 25 to 75 gal- 
OS Nakai C Clipe sere ere eee $6.50 
NO. 5 HEATER 
Aluminum Heater 
No. 5. These heaters come in 
single watts for following size 
aquariums. Don’t forget to state 
gallon capacity of your aquarium 
or wattage desired. We can supply 
them as follows: 
gal. tanks, 
gal. tanks, 
gal. tanks, 
gal. tanks, 
gal. tanks, 
gal. tanks, 80-watt. 
85 to 40 gal. tanks, 100-watt. 
Any of these priced at............ $2.15 
10-watt. 
20-watt. 
30-watt. 
40-watt. 
60-watt. 
All of Our Automatic 
Heaters Are Fitted with 
Condensers to Prevent 
Radio Interference 
ELECTRIC 
No. 6 
No Noise Magnetic Action 
The “‘Watchman’”’ 
Automatic Glass Tube 
Heater No. 6 
Built-in Pyrex Tubes 
This automatic heater is de- 
signed for aquariums from 4 to 
20-gallon capacity. The thermo- 
stat is set to maintain a tempera- 
ture of 76° EF. However an ad- 
justment is possible by turning 
the small set screw on the back 
plate. A fraction turn to the 
right increases the temperature. 
Glass tube heaters are not guar- 
anteed against breakage. 
Price each 
— 
Special Cartridge 
Heating Elements 
For repairing your aquarium 
heaters or making your own. 
20-30-40-50 watts, 
Hach $1.00 
60-75-100 watts, 
Each $1.10 
Glass 
Test 
Tubes 
2 Sizes 
4x6", 
30e each 
5 for $1.00 
cous 
35e each 
5 for $1.25 
AQUARIUM HEATERS 
SUCTION 
cup 
These heaters are now supplied 
with special metal hanger instead 
of suction cup hanger. 
Glass Tube Heaters 
Built-in Pyrex Tubes 
These Glass Tube Heaters are 
supplied with waterproof tops, 
hangers, and complete with plug 
and 6-foot extension cords, 
6-Inch Heater 
6-inch heaters can be supplied 
in following wattages: 10-watt, 
20-watt, 30-watt. 
Price complete, each-........-...-.. $1.75 
8-Inch Heater 
8-inch glass tube heaters can 
be supplied in 25-watt, 50-watt, 
75-watt, 100-watt. Complete as 
illustrated. 
Bl Gh eke tee eee Eee teen raee ere ene $2.00 
Stainless Steel Heater 
The heating element is sealed 
into one-half by eight-inch stain- 
less steel tube. The special stain- 
less steel tube, 20 inches long, 
protects the rubber cord and pre- 
vents water from entering the 
heater. The heating element 
housing is closed with stainless 
steel discs; all joints are soldered 
with stainless steel solder; 100% 
stainless steel; stainless steel 
hanger. 10” long, 13” high. 
VO) AuiHOLE Secon __..$4.00 
100: watt.-..- . 4.25 
TSO pyre tree caters ooo ececac coca sueaecesmeees 5.00 
2.0 Omawyieit beseasesscsvesen vaceawteen ssetcec see age 5.75 
Page 9 
No. 70 
150-Watt Thermostat 
No. 71 
300-Watt Thermostat 
Each 
No. 72 
500-Watt Outside 
Adjustable Thermostats 
Hach 
No. 77 Automatic 
Adjustable Heater 
Can be supplied in 25-watt, 50- 
watt, 75-watt, and 100-watt. All 
the same price. 
