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Re: [APD] Warping Tanks

S. Hieber wrote:
> If the large aquarium is not going to sit on a concrete floor, I find with the large tanks, it's best to try to level when dry, then fill, note the irregularities and whether there are noticeable gaps between the frame and the stand, then drain and make adjusts, refill and check.  I do all this before putting in any plants or fish, etc. Otherwise, it's hard to take into account how much the floor might move under the weight of the filled aquarium.
> I don't think the amount of diff you are seeing is significant for a 6' aquarium. If the panels bow out in the middle, than the top of the middle of the panels would be slightly closer to the floor, i.e., that would tend to make the water level appear slightly higher at the middle. You are noticing the opposite so it's more likely that the center of the aquarium, when filled, is sitting slightly higher than the ends. I would shim any gaps between frame and tank -- playing cards work great for this, trim the shims, and not worry about a 1/8" diff.

Luckily, my apartment does sit on a concrete slab. It turns out that the 
deviation is due to the plastic rim being slightly higher in the 
middle.. The tank has no bowing and the water level is level when 
measured from the stand itself.

Jerry Baker
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