Heres my setup: Strain: Dinafem Blue Widow - Blueberry x White Widow Soil Organic Mix: 1.5cf FFoF 1cf Organic Potting Mix (Local Blend) 1cf Lightwarrior 1cup Happy Frog Fruit & Flower 1/2cup Organicare 5/8/6 +8%ca pellet mix 1/2 bag Vermiculite 2 x 5gal Mother Earth Chunky Perlite Water: pH ~6.5 Botanicare Cal/Mag every other week FF Kangaroots BioAg Humic Acid Hygrozyme -All around 1/2 strength Lighting: 90W Sun Systems Grow UFO (Veg only, mother plant) Temperatures: ~78F-84F Light Cycle: 24/0 Container: Cloth Smart Pots Ventilation: 3 x 120MM Axial Fans, passive intake Runoff pH: Unknown, never watered to point of runoff to avoid overwatering. The upper leaves are turning bright green at some of the tips, and have a brownish tint at the central area of new growth. Some leaves at new growth sites is a bit malformed. Anyone have an idea? Is is a pH issue? Sulfur deficiency? I'm a bit lost...