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    DIY LED light on 450l Wave aquarium

    Hello to all :D On picture is my light that I build for my 450l aguarium. Aquarium is almost 9 years old, and Seachem gravel was never changed. I was sick of replacing CFLs so decided to go for LED. Light is based on 5 Nichia COBs 5000K 90CRI. Controler is arduino. Cooling is full pasive, and...