damn i leave for a sec and everyone starts commenting, ha good stuff though, i meaure the salt into a poland spring bottle which is one pint i believe, i use 1/4 tsp of salt for every pint for you reference, don't over do it just a little bit is needed, after a day or so the next time you water give it a good amount so not salts build up aroudn the roots, the size for them is ok for now, like everyone said the bigger the pot the larger the root system can grow which is good, but be careful transplanting not to damage the roots, brig whatever dirt that sticks to the roots into the new pot with then plants, i mean you cna even wait alittle bit longer for that to be done, i never used fish emulsion so i can't really comment on that but the other option that i can think of is to flush them and start fresh with nutes and such. This is done by drenching the pot with pHed water and keep it draining out the bottom until everything runs clear. Then let it dry up a little and start fresh with pHed wtaer and your nitrogen and such. Hopefully some others will chime in here so you can get a little more input from some more experienced growers, let us all know how it works out i'll keep looking in here for your results

GG23