"Blackwater" planted aquarium

Yeah, I can sum it up shorter.  Low tech means for lazier people like me.  High tech means for less lazy people like you who are willing to put in more effort.    I might change, but it is not the time yet.   Have a lot on hand right now.  

Yeah, one thing the algae can't live without is the lights.   Yet the plants can't live without lights either.   But the plants are more developed "higher" species, they can handle periodically darkness better than algae.   A lot of people split the time they have lights on, and use it as one of the method to combat algae.   It is why I have recommended it a while ago with putting one hour of darkness in the middle of lights on period. Some people split it more.

You may also get some "algae eaters" to take care of the very little algae.  We can't relay on them to combat the algae, but they will help.