firestorm Posted June 11, 2008 Report Share Posted June 11, 2008 I probably have about 90 lbs of slate in one of my 90 gallons. As long as your tank is in a good spot in your house, then you shouldn't worry about the extra weight. Just a little word of suggestion though. Try to add the rock when you are doing a water change BEFORE you put the water back in. Lol I was not thinking one day and decided to have a little overflow, not realizing that the weight of each rock will take up extra space. If they are small rocks it usually does not affect that too much, but when you use large stones like some of mine, you've gotta do it Quote Link to comment Share on other sites More sharing options...
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