How long does it take for water conditioners to do their thing? I'll me moving my fish to a 5gal. Heated tank so when I do the water changes whats the best way to get the new water to matching temp? Can I fill a container with warm water, add conditioner and then put it in the tank? My fish is in a 1 gal. Bowl right now. I currently condition water and let it set 24hr befor a water change. I use Top Fin conditioner but its measured out by drops and its something like 48 drops per gal. Is there a better, easier to use product?