Hi! My bottom leaves turn yellow (starting from tip, leaf vein turns yellow too) They got some heat stress (outside temp was 86 and lamp 1 foot close) for a week, and i'm not sure about PH. First i measured the runoff using 6.5ish water - it was 6.8. Then i put the soil i use in water, and let it sit for an hour. When measuring that PH it red 1 point lower then the initial water (water was 6.5, measured PH was 5.4). I heard this latter method is supposed to be more accurate. Is it just the heat, or should i change something about the soil? What type of medium: soil (compo sana universal potting soil) Indoors (but i put them out in the sun every day) What strain? Delicious seeds' Caramelo, Sensi star, Black russian How old are the plants? ~1 month What type of lights and how many watts? 1x 400w MH How far from the lights? was 1 foot for a day or 2, then i moved to 2 feet What is your watering frequency and source of water? every 2 days, from RO filter What, how much and when was it fed? NPK? none What is the medium/runoff pH and PPM if in hydro? 6.8 or 5.4, dunno What are the temps and humidity in the room?Temp 75 - 88, RH 35-65 What size pots? ~2x2x2 inch Any bugs? Look real close. Nothing yet - im piling up spiders in the grow room for this =) Thanks for any help