Isopropyl alcohol is often used in DNA extraction. It is added to a DNA solution in order to precipitate the DNA into a 'pellet' after centrifuging the DNA. This is possible because DNA is insoluble in isopropyl alcohol.
Four-lamp T5 light fixtures are great for mixed reef systems with soft and stony corals. Six-lamp or eight-lamp T5 fluorescent light fixtures are capable of sustaining higher light demanding SPS corals in reef aquariums with the proper reflectors using a combination of proper spectrum T5 aquarium light bulbs.5 Aquarium Light: Great for reef tanks and freshwater aquariums alike [Click here for more info.]. High output T5 aquarium light is a popular and versatile choice for illuminating your fish tank.
So if you find you are getting heavy growths of algae you can simply cut back on the amount of time the light is on and/or add algae eaters. If you have a freshwater planted tank or a reef aquarium most people recommend running your lights for 8-12 hours per day. This should give your plants or corals plenty of time for photosynthesis. No matter what type of tank you have the use of a timer to turn on and off your lights is recommended.