that is gona be hard with me havin only 1 res, them in the little pots are clones i took myself from my ones in soil grow 1st attemp at clones aswell they were in prop for bout 3 weeks till they rooted but can see them all now i think im only gona put 2 of them in that system and use 2 for whatever there were only spares incase i killed my blueberry with it being a first time...I would definitely start those little ones off on a little lower ppm . Seeing that ur tap is running in the 2s introducing them to a light 3-350ppm range might b a good starting point. Just to be safe I like to bump it up on them slowly depending they like it. But to be honest with u running a RO system is almost a must when doing hydro IMO .
Tell your friend to have mothers a lot healthier than this. You are facing an uphill battle from the start with unhealthy clones. The ones with yellow tips will be lucky to make it. Raise the light ,reduce watering and feeding they are not consuming atm anyway.from a friend of a friend