Ive heard some people put pennys in their filter to kill snails.
Do i need to put the pennys before the year 92 in my tank that are 75% copper in or pennys after 92 which are only alloys or copper plated or something?
Do i need to put the pennys before the year 92 in my tank that are 75% copper in or pennys after 92 which are only alloys or copper plated or something?