a friend gave me 50lbs of clean white fine grain sand and wanted to put it in my aquarium, the guy at the petstore told me it would destroy my filter, i have an above water filter, the only problem i could see would be if fish stirred it up and enough sand got around the propeller it might stop it but its driven by magnetism so surly it couldnt hurt anything could it?
if it does what if i took off the extension so that the filter tube was up high enough that it would make it unlikely for sand to rise as high
if it does what if i took off the extension so that the filter tube was up high enough that it would make it unlikely for sand to rise as high