First Grow on 3D printed Aeroponic tower

Yeah. The CCT (red vs blue etc) of light does have a measurable impact but it's tiny. I have half my room under 2900K and half under 3300k. This will not turn a lanky plant bushy nor a bushy plant lanky. It will have tiny effects on each and everything between. I still can't tell any difference. I position plants based on height and the 2" slant in my platform. The lanky plants come out lanky no matter what light is above them. Just because there is a statistically significant difference doesn't mean it is a big difference. DLI is far more important to the outcome than cool ( more blue) vs warm (more red) light. Most growlights are white light.. even the 2900k is technically 'white' light. It's better than blurple or red only for sure.

definitely WPM. If it is that bad at this point, throw it out. your environment is probably at fault... hitting dewpoint or maybe foliar sprays etc.. don't want consistently wet plants.