Final answer:
The water used for the fish is not treated with sodium bicarbonate, EDTA, alphatic amine salts, and sodium thiosulfate pentahydrate.
Step-by-step explanation:
The water used for the fish is treated with all chemicals except sodium bicarbonate, EDTA, alphatic amine salts, and sodium thiosulfate pentahydrate. None of these chemicals are used in the treatment of the fish water.