It is not a 2000w light haha from tearing it apart my best guess would be 300? But god knows what the 4 crappy fans draw. It's a hydro hog forsure for how much light it actually throws. 2000 real watts would destroy my entire 4x2 closet, let alone my little half footprint.
Yeah it sounds like in your case you already had so much main lighting, and it sounds like quite a bit larger of a grow, this is pretty small quarters.
I'm not too familiar with PAR and PPFD but I've done the math with some comparable lights, and from growing a plant solo with that side light, I knew I could have it 8-10" with alright growth and no burn, so it can't be THAT strong of a light.