Thanks! I'm using tetra dechlorinator. The directions only state to use 5ml per 10 gallons (so 1/2 a mL for 1 gallon) I'm using 1 gallon milk jugs to refill, how many drops would you estimate I need to add per gallon? LOL
First, I would buy two buckets that hold 2.5 to 3 gallons. You can get these at home improvement or hardware stores, probably some grocery stores. Only use them for fish (write "FISH" on the outside with a marker pen). This will allow you to change 2 gallons per bucket (filling it to the brim makes it difficult to carry).
You will then be able to add conditioner using a dropper. You can get these in medical supply places like drug stores, some pharmacies in grocery stores. Again use only for fish things. They will have ml marked along the tube.
So using the Tetra conditioner, from your numbers it would be 0.5 ml for the bucket of 2 gallons of water.