You mean drips from the top? DWC as I experienced it was an aggregate (expanded clay pellets) fed continuously from the top. Once set up and balanced, it was the easiest, fastest growing medium. The maintenance during a 6-8 week cycle was: add nute water, check ph. That's it.
For sure two plants with 500-600W of light can oversupply a person doing 5 cycles a year. Having a small space a few plants allows for much more pampering, and gets better results.
Now that your plants are a little bigger, you should start watering your plants this way from now on:
Wait to water plants until the top of the coco is dry up to your first knuckle
Alternate each time between giving plants nutrient water and plain water
Water plants thoroughly (always check pH right before watering plants even if using just plain water), until 10-20% extra runoff water comes out the bottom
Remove all runoff water about 5 minutes later (to give it all a chance to get out)
http://i.imgur.com/r2nvnX2l.jpg
http://i.imgur.com/I7nyRlal.jpg
I started with the first one and switched to the second one. It says coco coir and use water every 2nd time but I've done 2x a day watering/nutes based on your recommendations.
For the soil I'm alternating nutrients and water again.
So Grow Weed Easy is my main site and it seems pretty spot on but it directly contradicts what you guys have told me about cococoir:
http://www.growweedeasy.com/250w-hps-beginner-tutorial
They treat it like soil
See he's watering them 6x a day. I've not noticed them hurting watering every day twice a day.
Should I halve the nutrients?
I have a TDS meter
I do not have CO2 and don't intend to get any