First Grow - Mongrels

At the start of the week noticed the bigger two are showing signs of stress, think the lights are too close, leaves are cupping upwards and look thin and crispy, have moved them back now and also abandoned the 24 hour light cycle, now running 20/4. The lower leaves have grown massive on the first two plants and one of them has some yellowish spots, new growth is looking ok and they seem to be doing better. Doh!!! have realised I've been running them under Vege mode on the BloomBeast not Seedling. This has probably contributed to the stress as well as the 24 light schedule. Runty (The late last seedling to pop) seems to be doing much better. Roots are getting long on all three.