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
AND A COT AND LOUNGER
How sometimes we easily leave cot: broken material and prepared for her place in the dustbin. But don't throw a roll cage! Release him from the numerous springs and wire. Measure the...
THE DOORS ON “AGRIMONY”
Maybe a good ball or a magnetic latch for Dvorak table, painfully slamming when closing-opening. I propose a simple and quiet option: use widely used in clothing sticky Velcro...
