This is how used up Phillips LED 12.5W 6500K 1521lm looks like after 2+ years of duty on my Wallstadt style 30l Dennerle aquarium. It was on 11 hours daily. : r/led
Dennerle 11 Watt eBay Kleinanzeigen
Dennerle 5W LED Light/ 65K Nano Power Light for Nano Aquarium up to 10 gal 4001615057102 | eBay
Dennerle Nano Amazon Day, Ersatzlampe 11 W
Dennerle Nano Light, 11 W : Amazon.co.uk: Pet Supplies