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
TRIPOD FOR PETS
Many of those who contain animals in the house or apartment, the familiar pattern when a dog or a cat, licking remains of food from the bowl, rides on the floor of the emptied vessel,...
SNOWMOBILE FROM THE FOREST EDGE
Original wooden snowmobile constructed schoolchildren Gene Vorontsov, Jora of Kochetov, Svetlana Sour, Boris Nasonov, Kohl Utkin and the teacher of the O. D. of the Bars, who for...
