lowsingle September 14, 2017 September 14, 2017 I am looking for a custom tank builder to build a unique tank. Specifically, I am looking for a step down tank that is glass that is 4 feet deep, 3 feet wide and 3 feet long. The step down would be at 1.5 feet and the down step would be 2 feet. Any recommendations? Thanks, Darren
zygote2k September 17, 2017 September 17, 2017 We use Coast to Coast for most of our custom projects, but for what its worth, why not build a rectangular tank, then make an insert for the step? You can then use a standard stand and im guessing the tank will cost much cheaper too. Boom! just saved you $3000.
lowsingle September 19, 2017 Author September 19, 2017 We use Coast to Coast for most of our custom projects, but for what its worth, why not build a rectangular tank, then make an insert for the step? You can then use a standard stand and im guessing the tank will cost much cheaper too. Boom! just saved you $3000. I was thinking about this as well....I'm worried that the weight might be too much for my living room without reinforcing the floor from my basement. I could use the step area to create a nice hiding space for the fish though
Origami September 19, 2017 September 19, 2017 At 270 gallons, that's potentially 3500 pounds sitting on a 9 square foot footprint. (It depends a lot on sand and rock.) That's close to 400 pounds per square foot of loading. That's well above what most tanks put on floors in such a small space. With the load spread over two 2x10 joists sitting on a 14-foot span, if the tank is placed at the center of the joists, you're looking at a single point deflection of over1/4 inch. This is not quite half of the allowable deflection but will probably unseat tile (if on or next to a tile floor), produce squeaks and a little waviness in the floor, and may result in cracks and nail pops if there's a drywall ceiling down below. Larger span = more deflection. Bigger joists = less deflection. If you have access to the floor joists below, you could triple each of two joists along the whole length (that is, "sister" them) and cut the deflection down by a third. This is just a back of the envelope estimate. Your mileage may vary.
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