I transplanted five of the plants about 9 days ago into 6" round pots that have little nubs for feet and four rectangular drains.

New soil mix:

First, about 5 gallons of the following:
40% perlite
35% earthworm castings
20% vermiculite
5% sphagnum peat moss

1 tablespoon hydrated horticultural lime
1/4 cup bat guano
1/3 cup kelp meal

Since the transplant I have watered three times. I tried foliar feeding once with kelp meal a few days ago, but I didn't notice an effect.

Yesterday in the morning I fed four of them with their last watering using 2.5 gallons of water with approximately 2 cups of earthworm castings, 1/3 cup kelp meal, and 1/4 cup bat guano. These were added to the water in a 5 gallon bucket and stirred briefly just before use.

The fifth one was watered the night before and has not been fed aside from the transplant and foliar. It is the last picture below.

Also, the closet has been reorganized to allow for a 400w HPS. This is causing heat issues.

The oldest plants are about a month in vegetative growth now. They are bagseed so I don't know how big they should be.

Should I continue feeding every watering now?