I haven't tried the long Fluval lights, but the Nanos have been great for me. With three, I run overlapping schedules, so that the tank light rises in the east and sets in the west, and I only do peak lights (50%) for 1.5 hours per light, with a 2.0 hour ramp up and a 2.0 hour ramp down. With my 50% max, I only run 10% blue, since I heard BBA likes blue more than plants. I also decided to not run any blue at night for that reason. I wish I had more references for that statement, but if you search Fluval siesta, you might see the video.
One thing you get with the Nanos is height adjustment, if you need that. You can adjust height, and the extension of the light from the horizontal support.
I also schedule my three internal powerhead foam filters via Apex Fusion. I am trying to manipulate light and flow rather than chemistry, although I keep researching CO2. This is a Walstad tank where I only do minimal water changes from rinsing my foam in tank water.
I do pre-treat my village water for chloramine, but I found out there is a natural spring a mile away, so I am going to grab a bucket and do a water test!
Bump: I want to add that I am now a super-fan of running multiple lights. I get to have my tank lit from 06:30 - 21:00 without algae blooms. I just have to make sure to keep the peak levels down. Right now, the east side of my tank is totally dark, but the west side is mellow, probably 25% at this time.
I'm thinking of adding the Apex Lunar Simulator Module, and their three (white) LED strip, but mounting them to only provide indirect moonlight to the tank, following the actual lunar cycle.