Okay, i only have a 5 gallon bucket available right now and have a really busy day at work tomorrow, do you think i can start treatment in the bucket with just an airstone and heater? I don’t have a sponge filter handy. I cleaned out the bucket with hot water. I only have 5 gallons of saltwater handy as well.That’s what I use, but to be honest, it is slow to work (but it is very mild). You’ll want to ramp up to a full dose right away. Sometimes, people will do a FW dip on the fish to buy some time for the copper to work.