can you anaswer these questions, and how can you tell what the problem is whn you cant see it, but can you post better pictures? thats not nute lockout i can tell you that SOIL: What STRAIN are you growing? What was the establishing technique? (seed or clone?) What is the age of your plants? What PHASE (seedling, vegetative or flower) are the plants in? What Technique are you using? (SOG, SCROG etc) What size pots are you using? (Include how many subjects to pot) What substrate/medium are you using? (percentage of perlite, vermiculite...etc?) What Nutrient's are you using? *Knowing the brand is very helpful* What is the TDS/EC/PPM of your nutrients used? What is the pH of the "RUN-OFF"? What method of pH test was administered? When was your last water? When was your last feeding? What size bulb are you using? What is the distance to the canopy? What is your RH Factor? (Relative Humidity) What is the canopy temperature? What is the Day/Night Temp? (Include fluctuation range) What is the current Air Flow? (cfm etc.) Is the fan blowing directly at plants? Is the grow substrate constantly wet or moist? Is your water HARD or SOFT? Has plant been recently pruned, cloned or pinched? Have any pest chemicals been used? If so what and when? Are plant's infected with pest's?