Drainage? kind of lost, guess im not getting it

I helped a friend plant 7 seedlings into a mix of gardening soil/Potting soil/Perlite..

About 50/50 of each soil..

When they're watered they get about a cup of water each a day.
should water be draining into the drip tray?..
id assume no, because then you have gnats.

am i missing something

Should "we"' :) throw then in new 100% potting soil, OR if it isn't broken don't fix it?

id include pics of the wanna B ladies

heres the group shot. no flack about the dvd stands. Needed to have the plants at the same level due to lighting..


PS.. Not a damn thing was done with these. Threw them in the dirt and let mother nature take over!!!
I use Ice mountain 2.5 gallon water.. heard it had PH of 6.5

thanks for looking

next

plant2

plant3

plant4

plant5

plant6

plant7

lookin good snoopy doggy.

looking good so fa.. read about your dryspell in another thread.. shitty...

but those guys are well on its way..

as far as runoff.. I usually leave it, but I have low humidity issues.. (I need to leave a few trays with water just to get the humidity to 25%.. too cheap to get a humidifier)