1 of my redterror fish has white poop ,and is hiding alot,and i have not seen him/her eat in a day now.. i am assuming it has a parasite,so i have purchased prazi,and metro.. the prazi says it is for internal parasites,and the metro does not say anything about parasites.. so i treated with prazi.. can i also treat with metro by food,or should i wait and see what happens with the prazi? also it says on the merto i would need to cahnge water everyday,but the prazi says nothing about water changes after treatment. any advice or help would be great.. i never had to deal with health issues in any of my tanks so i am a complete idiot when it comes to this stuff