The Planted Tank Forum - View Single Post - What have I done?
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Old 01-23-2013, 08:16 AM   #7
aokashi
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well think about it this way..
1/2 bottle excel in tank
50% change = 1/4 bottle of excel in tank
50% change again = 1/8 bottle of excel in tank....
and so on....

the stuff excel is based on is used to sterilize stuff in hospitals :P

keep up those water changes!
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