INSURANCE FOR YOUR FISH 
The finny inhabitants of a well balanced 
aquarium have a body temperature depend¬ 
ent on the temperature of the water in which 
they live. This desired temperature should be 
maintained always at some definite degree, 
for instance 75, 77 or 78 degree. Most deli¬ 
cate Tropical Fish do best at any of the above 
set temperatures, but immediately when sud¬ 
den changes in temperature occurs, there re- 
subs the susceptible "chills" and "ich" devel¬ 
opments. 
"NIPOGOLD" AUTOMATIC THERMO¬ 
STAT controls are scientifically designed to 
automatically maintain the water in an aquar¬ 
ium at a constant, even temperature which is 
so vital to the life and health of the Tropical 
Fish. Nipogold Thermostats are carefully con¬ 
structed with the best of materials and have 
proven to be thoroughly reliable and accurate 
in performance. 
"NIPOGOLD" THERMOSTAT UNITS con¬ 
sist of a temperature sensitive element as¬ 
sembled on a substantial bakelite material and 
entirely set in a glass tube. Corrosion is there¬ 
fore eliminated, and the entire mechanism is 
visible at all times. 
Protect your TROPICAL FISH pets for the 
future span of life by investing in a depend¬ 
able thermostat. And remember, the thermostat 
pays for itself by the amount of electricity it 
saves within the period of three to four months. 
Your first cost is your last. A Guaranteed 
Nipogold "DeLuxe" Thermostatfor only $2.75. 
