hey my plant is one week old the strain is mendocino madness from th seeds. im using bio tera plus soil with added perlite, and no nutes yet only 6.3-6.5 phed water (below 100 ppm) from a spray bottle. the temp are between 76-78 and humidity on the low at 30 on the high around 44% the soil temp is around 70-74. im growing indoors, and the plant is under 2 40watt floros that are a 1-2 inches from the plant. the lights stay on 24/7. All the plants seem to be doing very well but a few are turning yellow at the tips and curling downward! What could the problem be ...any ideas ? Thanks