In small towns and villages of young aquarists are faced with the same problem — nowhere to get equipment for aquarium: pet stores do not. But everywhere there are fotootdela, and and them the red light. But why fish red glass? If it is removed — get a reflector it extra light will give to the development of aquatic vegetation, and heated water — is enough to put fototovari without glass on the cover glass of the aquarium.
A. BELONOZHKO, Kiev
Recommend to read
“THE WOLVERINE” AND “ACHILLES”
Simultaneously with the design, testing and deployment of serial production of light anti-tank self-propelled artillery installations (SAU) on the chassis of cars and armored personnel...
HIGH-SPEED SCREWDRIVER
Innovators of the Moscow machine-tool plant named after Sergo Ordzhonikidze developed an unusual screwdriver, equipped with a booster with transmission ratio 1 : 6. This means that one...
