Sorry but I have to agree with Scotsman....tinfoil is indeed bad for your plants....hot spots from your lighting off the foil can burn plants and reflection from foil is poor and uneven at best . You're better off using nothing than using tinfoil.
Weedhound Reviewed by Weedhound on . weird spots on leaf can anyone tell me why i have these weird spots on the leaf?.. i have just started the flowering stage at 8weeks with the 250w HPS bulb..hanging at about 80cm-1m above plants, and before this post, nutrients were not given to the plants... but when i saw the leaf with those spots i figured that maybe it could be due to lack of nutrients.. so i have just given them a solution which consists of 11.5N, 6.5(P2O5), 10(K2O). 3ml of solution was mixed in 2l of water... Rating: 5