Well could anyone tell me what they think this could be please?
Is it a Magnesium (Mg) deficiency?
Or is it fungus like Septoria?
It started 4 days ago on three plants in the corner, then quickly spread to about 7 plants now. Horrid shit starts on lower leafs at the tips and works its way in towards the plants trunk. All new growth is normal.
Sorry about the Scans, No Cam as yet... Desparate!
System: Flood and Drain 10L Buckets. Flooded @ every 8 Hrs. Hydroton Pebbles.
Nuites: Canna Aqua Veg, rhizotonic, Silicon, showing 1.1CF on the Trunction (Base water CF value of 6). PH = 5.7 in 210L res.
Plants: Northern Lights and NL/Big bud. From Seed, 3 weels old (9/02), in system 5 days.
Lights: 600w at 3.5 feet from top of plants. 18/6.
Temps: 68F Nights, 72/75f Days. 21c in Res.
any help will be much appreciated. Many Thanks in advance....
