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
FENCE — PORCH
A kind of gate on the porch of the cottage block the entrance while the plot owners. And with their arrival it was as if she climbs the steps, becoming an ornamental fence and handrail...
HISTORY OF ONE DELUSION
When our boys faced the problem of choosing equipment for the new sports season were not differences. All who are engaged in class models AM 1 and AM 2, stopped, as agreed, the scheme...
