The tinfoil reflects both heat and light, those spots could certainly be from nute solution spilled on them; I dont think that light you are using is powerful enough to make the tinfoil burn the leaves IMO, but tinfoil is a hazard electrically and is worth replacing with a cardboard box (top and bottom cut off) lined with mylar.
Other than that, keep an eye on that plant and keep up the good work!
4x5 Reviewed by 4x5 on . jazzman's first grow log - help appreciated ;) Hey peeps, saw how helpful this community is, so decided to post :) I'm probably gonna get bashed for this, but I wasn't very serious about this until now, was mostly for the fun of it.. but seeing them grow now I don't want to ruin anything T_T This is indica/sativa strain (sensi seeds skunk #1), 20 days now from the day I first planted them. They have been outdoors all the time. Till now all they got was good amount of sun, fresh air and tap water. I'm buying new pots tomorrow to Rating: 5