I dont know if it will skyrocket but it may if tank isnt well established to begin with. If does increase, pwc should help until subsides. Should check
nitrite also. Once tank is reestablished well to handle extra bioload(POO), should not have further difficulties unless bio-activity are lost.
10G is small volume of H2O thus should monitor the H2O more often.
As far as shedding, have seen them do such when exposed to extreme
pH. So check your pH also.
Is there any eel or scaleless fish which usually has thicker slime coat?