Help Sick Goldfish

[rubberdoofa]

hello, ive set up the 96 tank and put the fish in they are very happy hoping my filter medium transfare works and everything should be ok i have also put in a secondry filter the one i had in the other tank.
water stats are:
nitrate 0
nitrite 0
amonia 0 wooohooo
and ph is 7.6

im looking out for spikes keeping a close eye on things and soaking my fish pellets
so now as i tecnicaly have a new set up im unsure about adding the salt? should i still do this and how much am i to add over what period what should i look out for in ill effects in the fish?
now i have a spare tank that i have no need for.

 

[rubberdoofa]

Well i still have 4 goldfish, ive nursed one with fin rot his tail went realy bad i added salt over time and some finrot stuff water changes too and its clearing up nicely, will his tail grow back properly? its kinda ragged but the white fluff etc has gone and hes livend up and not at all sulky , I will be placing in the fluval 4+ filter out of my 240 tank when my fluval 305 arrives for more filtration and oxygen.
on a lighter note my mollies have had babies loads of them and i had 4 unexpected neon fry woohoo which my mollie fry ate!.....not so woohoo