So you think perhaps your nutes were too strong and that's what made you plants unhappy? IMO always good to try and understand the root cause of a problem so you can try to avoid in the future
And yeah dude, hydro is like having an IV at the hospital -- what's in those nutes shoots right into the plants FAST... That's why people say other mediums (soil, coco, whatever) are more forgiving.
If I were you I'd increase any nute strength very gradually.. Maybe in 50 PPM increments and see how they take to it before upping again... Try not to do anything too abrupt in hydro, especially when you have seedlings which are vulnerable.
Another consideration is if you'll do mini-flushes... Some people (including myself) will do a 2-3 hr flush every X days using something like Clearex + H20 to flush out any nute build-up and "reset" if you will. Some people don't. Something to think about if you haven't already.
My $0.02 anyway
You can mail order cannabis? I never knew that... Enjoy dude!