So while i was at petsmart today i happened to notice a very beautiful crowntail betta, that happened to have popeye. i showed it to the manager and she let me have him for free. i bought some maracyn to treat it with, but the dosage is one packet for 10 gallons of water..... i do plan to divide one of my current ten gallon tanks to put him in once he gets better. but i dont know how to dose out this medication and treat him in the hospital tank he's in. right now he is in a heated 1 gallon bowl with water that has been conditioned and has aquarium salt added. i dont really know how to proceed from here :/ how much do i give him? how do i measure it out? and can i leave the heater in the tank when i add the maracyn? help!