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RE: [APD] Re: A large tank

I work at an Architecture and Engineering Firm and talked to a guy I know in out Structural department extensively about getting my 75 and whether it would be a problem in my house. We discussed slab on grade, and he said that the slab in my 1902 house was probably 1.5" thick and that it would be a bad idea to put a 75 on it.

Based on that, I would think that a tank the size of the one in the picture there would need more than a standard 4" slab on grade. I would want a footing underneath the slab under the whole tank personally.

He must have a Huge DI or RO unit for topoffs on that thing, and I wonder if he doesn't have some huge mental health bills as well. J/K, that was my envy talking.

AZ Burns

From: Bill Wichers <billw at waveform_net>
Reply-To: aquatic plants digest <aquatic-plants at actwin_com>
To: aquatic-plants at actwin_com
Subject: [APD] Re: A large tank
Date: Tue, 16 Dec 2003 17:40:28 -0500

So, uh ... Anyone care to venture how much it might cost to put something
like this together? =)

I've seen acrylic tanks of this size that are upwards of $5000. No idea what glass would be. Ongoing costs are going to be a lot too. Guessing those are 400 watt metal halide lights he has, and there are 8 of them, that's 3200 watts of lighting which would be $115.20/month at 9 cents per kilowatt hour and assuming the usual 20% losses in the ballasts. You'd probably have another $100/month running pumps. I think with a tank this large Tom's no-heater tank idea would start being very economical too.

And if you want to build this into your house you have two options:
1 - concrete slab on ground floor
2 - concrete slab on steel frame (girders, not truss)

Just tell your contractor to build your fish room like a multilevel parking structure :-) Seriously though, if you really do build a tank like this you really should talk to a structural engineer. The tank will be a *lot* of weight in a small space, and that needs special construction to support it.


***************************** Waveform Technology UNIX Systems Administrator

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