so i got a small motoro on thurseday and hes not realy eating, aside from afew black worms, and hes a little thin, iam pretty sure he has parasites so i whant to dose some prazipro, ive added some melafix to tank sence i thought it woudent hurt and the jurunese catfish with him has some torn fins, on the prazi bottle it says dont use with other meds dos melafix count? and should use the dosage on the bottle? its a 120ish tank with a DIY wetdry, temp is 84 PH 7.8-8, iam not sure on the other params, will doseing prazi have any side effects? and is it just one dose or add more in afew days? also i reading salt is good to add to the tank but that would take a lot of aquarium salt i would think, would marine salt(for saltwaterfish)be good sence it has trace elements ect in it as i have a that on hand?