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
ELECTRIC BOILERS FOR A PRIVATE HOUSE
The house is built. Electricity is connected. Winter is coming... I suggest making a water heating system using an automatic tubular electric heater (TEN) "Ariston". Reliability and...
VELOSEZON
The proposed design is the winner of one of the contests of velomobiles in the Lithuanian city of šiauliai. My first recumbent I built in the 1980's, a few times it was altered...
