DIY LED light fixture for aquarium: 120 watts for under 100$

This covers the design and construction of a large 120 Watt LED light fixture for planted or reef aquariums. Using 40x 3w star LED’s and 1” square aluminum tubing. For reef aquariums, substitute actinic (440nm) Blue LED’s for the red used here – the 660nm Red is ideal for freshwater planted tanks. This fixture was designed for a 5-foot-long planted aquarium. You will need to adjust the bulb spacing and number of bulbs for shorter lengths, possibly requiring a smaller (able to support a smaller minimum number of bulbs) ballast. I recommend you place the bulbs no closer than 1 ½ inches on center together. For a 6ft or longer tank, I recommend two fixtures for better cooling and air flow. Supplies: total cost Description 1 22$ 10’x1” square aluminum tube 2 18$ 600mA constant current LED drivers (120v AC In, 54-105v DC out) 20 10$ 660nm RED 3W LED star (use 440nm Blue for reef) 20 8$ 5500Kelvin White 3W LED star 1 18$ 60mm 120v cooling fan 1 8$ 2-part epoxy (JB weld) 11 - assorted screws - Wire, electrical plug, wire nuts, tape, solder - wood/metal/plastic trim for bottom edge of lamp Total: ~84$ Links: LED driver : https://www.ebay.com/itm/221706249074... (or search your favorite marketplace for "18-30x 3W LED Driver Power Supply 600mA") 3w star LED’s https://www.ebay.com/sch/i.html?_from... (or search your favorite marketplace for "3w star LED") 60mm 120v cooling fan: https://www.ebay.com/itm/Sensda-60-60... (or search your favorite marketplace for "60*60*25 mm AC 115V 230V 5W axial cooling fan") Subscribe Now! https://www.youtube.com/subscription_...