I am by no means an acrylic expert but I strongly believe 3/4" is too thin for a tank of this size. I would think 1" - 1.25" would be the right thickness. Tunze magnets work on a tank up to 3/4". Who is supposed to make the tank? I would call James from Envision Acrylics. I trust his opinion as expert and if I were to build a new tank I would use him.
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Amanda
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