
HEATERS AS PICTURED ABOVE 
1. GLO-LITE HEATER—A combination chill break- 
er and aquarium light to heat and illuminate a 
small tank (2 to 5 gallons) at the same time at a 
very low cost. Comes with asbestcs shade (Not 
shown in picture) to control amount of light. 
Six inch glass tube price each $1.50. 
2. RENOYLENE HEATER—Pyrex tube with non- 
corrosive metal holder. Heating element of Grade 

A chrome steel to insure high safety factors. 
10 inch Tube, 25-50-75 watt, each $1.75. 
10 inch Tube, 100 watt, each $2.00. 
3. RENOYLENE HEATER—Same as No. 2 in an 
8 inch Pyrex tube. 8 inch tube 15-25-50-75 watt, 
each $1.65. 
(BE SURE TO STATE WATTAGE DESIRED ON 
ORDER) 
4, LOVELAND HEATER—This type of heater may 
be completely submerged or place on the bottom 
of aquarium if desired. Absolutely water proof; 
sealed with live rubber; heavy duty water proof 
cord 36 inches long to allow heater to lie on 
bottom where the water is the coldest ‘to give 
better distribution of heat. 
6 inch Pyrex tube, 12% and 25 watt, each $2.50. 
8 inch Pyrex tube, 25-50-75 watt, each $2.75 
10 inch Pyrex tube, 125 watts, each $3.25 
These heaters can be furnished on special order 
in 150-175-200-250 watts at $4.00 each. 
HEATERS 
A good heater and thermostat is a small expenditure that 
will more than pay for itself by the fish that didn't die. 
Since most aquarium fatalities are caused by temperature 
fluctuations, a heater in cold weather is practically a must. 
Automatically controlled heaters are perhaps the greatest 
benefit ever devised for the tropical aquarium. For a healthy 
aquarium the water should be maintained at a temperature 
of at least 70° F. For spawning egglayers or nursing sick 
fish the temperature should be gradually raised to 80° or 
ster lee 
NOTE: A heater without a thermostat is not automatic. It 
will operate continually as long as it is plugged in or the 
electricity turned on. 
All Heaters are guaranteed for one year—except against 
glass breakage. 
We recommend the following size heaters for your 
aquariums: 
2 to 5 gallons Glo-Lite, 12¥%2 watt or 15 watt 
5 to 10 gallons, 25 watts 
10 to 15 gallons, 50 watts 
15 to 20 gallons, 75 watts 
20 to 30 gallons, 75 to 100 watts 
30 gallons, 125 watts or more 
We strongly advise using a thermostat and pilot light on all 
aquarium heaters; for safety and economy. 
5. ECON-O-HEATER—Servicable heating at econ- 
omy cost. A good heater at a new low price. 
Nichrome heating unit; metal clamp holder. 
7 inch Pyrex tube, 10-20-30-40 watts, each $1.50 
7 inch ordinary glass tube, 10-20 watts only, each 
$1.35 
6. SIMPLEX COMBINATION HEATER AND THER- 
MOSTAT—The arrangement of the heating ele- . 
ment, thermostat, and radio static eliminator in a 
single pyrex tube make this unit very simple 
and space saving. The solid heating unit is 
practically everlasting and being at the bottom 
of a long tube gives good bottom heat. 
8 inch tube, 40 watt, each $4.00 
10 inch tube, 50 watt, each $4.25 
10 inch tube, 75 watt, each $4.50 
NSS? 
BIRG THERMOSTAT—Temperature range 70° F. 
to 100° Outside top adjustment knob. Controls up 
to 600 watts combined heaters. Guaranteed for one 
year. 34% foot lead cord with 3 way connection 
for pilot light and heaters. each $4.95 
(Pilot light if desired 35c extra) 
BIRG THIN ROD HEATER—A single thin glass 
tube—new idea in heating aquariums. 
8 inch, 25-50 watt, each $2.00 
10 inch, 25-50 watt, each $2.25 
ADJUSTABLE HEATER—Adjustable type heater 
that you can safely adjust from 20 watts to 80 
watts. Can be used in connection with any thermo- 
stat. Outside top’ adjustment. Each $3.75 
OTHER AQUARIUM EQUIPMENT 
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Filteratio nim ee ter nk:: Meets. nee ese Page 15 
Thermostats aetna OE ee Be es Page 17 
AGGeSSOLiSS Iss. eee Hee ose ee ee Page 18 
Ornamenisy ccs tee cee Bas eee Page 12 
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“OUT OF SIGHT” 
HEATER—A new heat- 
er for the aquarist who 
does not fancy a heater 
tube competing with 
the naturalness of his 
aquarium. This heater 
so thin a plant of Val- 
lisneria will hide it. 
Dual glass tube. 
10 inch, 25-40-50 watt, 
each $2.25. 
Heaters need a Ther- 
mostat to operate 
automatically. 
HEATERS NEED A THERMOSTAT TO OPERATE AUTOMATICALLY 

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