| | Re: Blue light and algea
This is hard for me to understand, but the graphs help. Just getting info like that on bulbs is difficult and in some cases impossible. After my trip today down LED lane it is abundantly clear that all 6500 kelvins are not created equal, (or any number kelvin).
Growing plants without algae is a challenge with all it's variables, but who cares if the tank color looks horrid. I agree with AaronT that it's more about clean tanks, light and nutrient balance and flow than light spectrum when it comes to algae.