hmm......I think I may clean it a bit then....at least some of it anyway....
Any tips on how to clean the sand easily??
I was thinking if I put the old sand on the bottom, and new sand over top......and add water without disturbing the substrate too much, then not as much nasty stuff woulld leach out......
That's kinda how I did it when I bought the original setup from the previous owner.....and it worked well.
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