So I bought 6 rigid aluminum 50cm 5050 led
aluminum strips from AliExpress.
Each costs ~$3.50 delivered ~ $20 for six.
After some cutting, riveting and soldering
Installed on aquarium, lights on:
Installed on aquarium, lights off:
According to power monitor, whole assembly consumes 46 watts
and produces 2000 lux at the center, 1500 at sides, 1200 at the darkest corners.
Before I had 4x13 watt CFLs hood which was consuming 56 watt,
and producing 1700 lux at the center and 1000 at the darkest corners.
Not much saving, but I am going to add Arduino dimming, which is really easy with constant voltage LEDs.