Yeah. I sprayed it heavily one night while lights were on. Now I only spray them when the lights are off, every time I check on them. I seen a lot of bugs in that room so I just want to keep them as safe as possible. I know I didn't overfert too bad but some young leaves are starting to show some burnt tips so I know it bothered them a bit. It's just a lesson I learned and something I will never do again.