No need to take a pic of the light, but regardless of whether you think it is enough light, or I think it is enough light, the plant is telling you there isn't enough light...that could be one reason it keeps dropping the lower leaves...they just aren't getting light, because to tell ya the truth it doesn't look nute burnt to me...and I have burnt quite a few plants so far...but don't flush MG if you can help it it will only make overfeeding worse...you have to have a fan too...on my first grow I was like the plants aren't getting hot, I don't need a fan, but uhhhh yeah you really do need air hitting them...making them sway a little...makes your stems stronger and thicker...and the stronger and thicker the stems the better...Anyway you have to get more lights on the plants or they will forever continue being limbo seedling plants.