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Old 08-03-2007   #1
tstadler4277
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Default Math Question. What will be the specific gravity in my aquarium after...?

I'm trying to get the specific gravity in my aquarium down. Please tell me what it will be after replacing 25% of the water. Right now the SG is 1.024 and the replacement water will have SG of 1.020. So basically if 75% is at 1.024 and 25% is at 1.020 thenwhat is the blended average?hope this makes sense
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