Where I live it's the other way around petco has helthier fish and petsmart has more supplies. Wich ever fish are helthier and better taken care of. Also chek if there is a Pet S :nod: upermarket near you they have VERY helthy fish. good luck!!!
I agree, try adding 1 rounded table spoon of aqaurium salt for every five gallons of water. You could also make the tank a warmer temp. I would not add any meds while cycling.
;) !GOOD LUCK! ;)