I'm planning on switching my substrate to black sand sometime in the future. I'd like to add some rock's to it to make my fish and myself happier with my tank 
I was wondering if I could just go find some nice rocks from the garden and wash them well or if I should go out and buy some to add to the tank?
Also, I was wondering if anybody had any tips for how I could go about this process. (Should I buy a tank safe glue and glue the rocks together or should I just leave the rocks free standing in the tank?) Stuff like that.
Also, suggestions and other ideas on how to decorate my tank would be nice (It's the tank in my signature
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I was wondering if I could just go find some nice rocks from the garden and wash them well or if I should go out and buy some to add to the tank?
Also, I was wondering if anybody had any tips for how I could go about this process. (Should I buy a tank safe glue and glue the rocks together or should I just leave the rocks free standing in the tank?) Stuff like that.
Also, suggestions and other ideas on how to decorate my tank would be nice (It's the tank in my signature