led lamp g4 30-30
http://www.bulkreefsupply.com/aquarium-lighting/aquarium-led-lighting.html Choosing the right LED light for your saltwater aquarium can be a daunting task.
Checking a common light bulb using a multimeter on the ohm scale. Testing to see if it is good or bad. Also watch: Using a multimeter to test a two filament bulb.
AN-1182 AN-1183 English.