Yes that is exactly what I mean. I watch Mr.Tight's Youtube channel and I remember him talking about how he accounted for the extra light he get at the middle because of the overlapping of the 2 lamps. This was the case for HPS which is more relevant than with LEDs as the LEDs have a narrower beam angle because of the lenses. However, I think it would be beneficial to have the cheapest LED on the middle.
I think a good way to check how even is the light could be by taking some pictures and looking at the reflection on the back wall. As you can see from your 1st picture from day 42, the saturation is much stronger on the left side of the tend. Although maybe this is just the result of your shooting angle.
I think a good way to check how even is the light could be by taking some pictures and looking at the reflection on the back wall. As you can see from your 1st picture from day 42, the saturation is much stronger on the left side of the tend. Although maybe this is just the result of your shooting angle.