I know that the "cichlid salts" and plant additives that are just minerals would be cheaper if I bought them by the kilo and weighed them out myself, but I like that someone has already done the math, and I just have to follow directions. I do think Prime is superior to plain dechlor because it helps with nitrite. However, Obsidian is right, you shouldn't need it in an established tank. Any dechlor should do. So you'd use the cheapest, right? But every time I have priced "store brand" water conditioners, Prime comes out cheaper dose for dose. Prime often costs 2 or 3X as much, but you use 1/10 as much. .5 mL / 5 gallons vs. a 5 ml capful.
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