How quickly do I turn up my lights during flower?? I'm at 75% on week 4 flower… i don’t want to over do it…

You should be at 100% two weeks ago. What is your wattage? I use 300 + 100 as support lights and during the first two weeks already in the veg phase I naturally dimm my set up to 100% in just four to five days...what you are doing with 75% on week 4 is loosing precious power on your veg phase that is probably the most important time to have full power on your set. Good luck.

Flowering = 100%........no need to be afraid! You will not be over doing it.

Hello! I've recently been fine tuning my light strategy. So the research is fresh in my mind. However, we need to know more about your situation. 1. How many watts? LED? HPS? 2. Grow room area and light size 3. Autoflower or photoperiod? This will change your DLI strategy