Coco - forget leaving town unless someone you know who’s actually trustworthy takes over the multiple feedings or watering daily. Faithfully. Without missing it. If you are having trouble in peat I’ll predict trouble with coco.
I’m seeing some magnesium deficiency. Suggest foliar spray. 1 tablespoon epsom salts in a gallon of water. Add a drop of liquid soap to help it adhere to the leaf.
I use this one. Measured it against a friend’s Apogee ($700) and it was within 10 at 1000 ppfd
Quantum Par Meter Light Meter for Plants Led Grow Lights Indoor High Precision Rechargeable https://a.co/d/htBnoMn
You’re probably right. On Amazon clearly states 600 watts. But on their own website says it’s good for seedlings. Still 2 of them in a 2.5 square tent should veg ok.