I just purchased a 28' round Sharkline Matrix and I plan on burying it. I do realize that it will void any warranty. I did this with a previous above ground with great success and when I moved after 10 years it was still in great shape. This time around, I would love to do a concrete surround. I have researched quite a bit and have seen it done in photos but I don't know what was used for the backfill or how the concrete was supported. I would truly appreciate any advise from someone who has done this before
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