What a dumb question. What are you talking about? plants dont drain mediums drain, also is the water running down the sides in air pockets or going straight thru the medium? what is the medium? system? pot size? . Please dont ask vague questions. . Your pics dont work no shock there.
I agree , you should have re potted weeks ago. Put it in a much bigger pot, in a week it will be better than ever and in flowering it will triple in size.
So many things wrong i dont know where to start. Its a terrible plant bro and your flogging a dead horse here.
Start again, use quality coco and hydro nutes from the hydro shop, not some homemade nutes that are wrong for growing dope.
Get some more exp as a grower before attempting DWC again.
Its a big improvement on the old site, much better. The old site was a fucking joke, i couldn't type text properly, kept crashing etc.
You have to get used to it mate , like most things in life it takes time to adjust.
The clone was never much good was it? some clones have issues and dont work. Make sure you only use thick stemmed healthy cuttings from the top of the mother plant.
Overwatering. When you start seedlings have much smaller pots to avoid this, the large pot is too big to dry quick enough between waterings causing this droop and stunting. Let the pot dry and light to lift.
Thats alright its a common mistake, remember if you follow the directions on label they wont burn. Its harder to burn plants with hydro nutes in comparison to miracle grow for eg.
Dont blow air in ,suck old hot air out. A centrif fan sucking air from the hood(other side passive) blowing it outside. A piece of cardboard or thin sheet timber with a 6" hole slotted into open window.
No seedy dope is not as strong as seedless in general and is a commercial disaster. Get that plant out ,dont use any of the seeds from any plant in the room in future grows.