Realistically the only difference is the silicon adhering to the wood vs the pond armor for the structural silicon (not the seal) the silicon for the seal would still be glass to pond armor. The only drawback I see is IF it leaks. It will leak onto wood instead of pond armor. But if it springs a leak I really wouldn't care much about the wood Bottom lol
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Sent from my SM-N900W8 using MonsterAquariaNetwork App