Tamitha Posted August 29, 2021 Share Posted August 29, 2021 Is it a good idea to put egg crate under the substrate if using large stones in the aquascape? I have seen this done on videos and bought some thinking it was a good idea but I got to thinking. I'm using sand as a substrate so how do I keep the sand from working under the egg crate possibly causing pressure issues? Stupid question I know but I was moments away from setting up my next tank when this thought hit me and now I'm worried. Link to comment Share on other sites More sharing options...
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