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
SEW… THE NEWSPAPER
Bags and bags made of polyethylene are very convenient for storing small parts and various fasteners. Get them of any size succeed even without traditionally used homebrew thermal...
OPEL ASTRA CABRIO
Premiere of the OPEL ASTRA CABRIO was held at the Geneva motor show in 2001. It is worth noting that the firm already supplies Opel to market hatchbacks, sedans and coupes of the family...
