This is my new LED build! I have a similar 65L bucket which works quite well. This one has two 60w Cree COBs with dimmable drivers and a 12V 5A power supply for the bottom fan and LED strips inside. I don't think it needs to run at full power because I'm getting 20k lux at the bottom of it with just a couple of turns on those drivers. The heatsink is quite cool because there's a fan above it pushing the air through the lid and the bottom fan is pushing the air into it. I just need to pretty up the cabling and add some insulation tape on some bits but I'm quite happy with it.