WARM FOR FISH

HEAT FOR THE FISH.TWO OPTIONS OF HEATERS FOR AQUARIUMS OFFER OUR READERS. Uniform temperature in the aquarium keeps the water-filled Cycling or any other appropriate size camera. It is placed as shown in the figure.

 
S. KINDLER, Saratov
 
Heaters that are commercially available — with a filament and salt, or bulky, or too powerful.
 
 
“Semiconductor” heater:
 
1 — wire bracket, 2 — tube, 3 — sand, 4 — tube, 5 — resistor, 6 — power cord with plug.

 
Within a few minutes you can make a “heating” coal resistors type MLT, VS-2, MT-2, etc. with a capacity of 2 watts. They are inserted into the glass tube, the ends are attached to power cord with plug and close the vial stopper. The power of the heater can be more than 20 watts.
 
V. BEDNYAGIN, Novocherkassk

Recommend to read

  • FOR BUSINESS AND TRAINING…FOR BUSINESS AND TRAINING…
    This bike has unusual pattern and drive: two steering wheels, instead of rotating the pedal — levers. The force on the chain is transmitted when a cyclist privste from the saddle. And of...
  • THE KEY IS “HOW MUCH”?THE KEY IS “HOW MUCH”?
    Even the person far from technicians, often have to Unscrew-screw the screws, bolts, nuts (hardware — so often referred to in abbreviated form these metal products) are designed for this...