Blue Gorilla Glue Auto

First grow. Any advise from experienced growers is very welcome! 20/4 light cycle. Planted 20ml deep. Day 1 - Watered 1.25L per plant 600W Day 2 - Watered 1L per plant 400W Day 3 - Pots FL and BR showing! No water needed (due to lots of residual water in the trays) 400W Day 4 - All four pots showing! Watered 1L per plant (as soil was still moist to the touch but the tray was dry) 400W 28 degrees C. Ph levels before watering - (FL - 5.5/6Ph) (BL - 7Ph) (FR - 6.5Ph) (BR - 7Ph) Day 5 - Watered 1L per plant (as soil was still moist to the touch but the tray was dry) 400W 28 degrees C. Ph levels before watering - (FL - 6.5Ph) (BL - 5.5Ph) (FR - 6Ph) (BR - 6Ph) Day 6 - No water needed (still water in the bottom of the tray) 400W 26 degrees C. Day 7 - Watered 1L per plant (as soil was still moist to the touch but the tray was dry) 400W 25 degrees C. Ph levels before watering - (FL - 5.5Ph) (BL - 5.5Ph) (FR - 6Ph) (BR - 6Ph)