Hi folks. 5.5 weeks into skunk#1 grow, still vegging. 2 x 300 cfls envirolites dual spectrum in 6" diameter pots. Ph measured at 6.3. Initial feed was non soluble and think i may have overdone it a bit. Since then switched to Using miracle gro all purpose feed. Problem is am seeing some very yellow grow tips. Flushed it this evening. When should I re-introduce nutes? Plan to go 12/12 around 10th October with an organic bloom formula. It's about 10" tall. Have another plant half the height but didn't get the non- soluble food. Growth seems slow on both but no yellowing on younger plant. Have grown White widow, low Ryder and shiva skunk before but never any issues. Any thoughts on my girl?