Is something burning?

jiveturkey918

Active Member
ok i have three plants all of witch are about 3.5 weeks old and i just moved them to 2 gallon potts. for soil i used a mix of MG organic mix, perlite, verm, and a pinch of peat. they seem to be doing fine. my ph is about 6.8 the thing im wondering about is that the top surface turns brown and crusty maybe even a yellow color. all of the perlite on the surface is brownish yellow. what causes that and is it bad or normal?
http://i494.photobucket.com/albums/rr309/colbyfreeman918/IMG_0070.jpg
http://i494.photobucket.com/albums/rr309/colbyfreeman918/IMG_0071.jpg
 
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