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#2
05-27-2009, 12:05 AM
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I would say it will depend on your stand, and on the tile and tile installation. My front entrance tile is slate and there is no way it could take it. Slate is too soft and the surface is too uneven so any load pushes on the high point of a single tile.
You would want your stand to spread the load over as much surface area as possible. No small feet or legs on the stand. I'm mindful of my hardwood floor and the 110lb guest who damaged it by wearing stiletto heels. If she were wearing snowshoes, she wouldn't leave a dent. It is all about psi.
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400 gal reef. Established April, 2007. 3 Sequence Dart, RM12-4 skimmer, 2 x OM4Ways, Yellow Tang, Maroon Clown (pair), Blonde Naso Tang, Vlamingi Tang, Foxface Rabbit, Unicorn Tang, 2 Pakistani Butterflies and a few coral gobies My Tank: http://www.canreef.com/vbulletin/showthread.php?t=28436 
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#3
05-27-2009, 01:00 AM
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Quote:
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#4
05-27-2009, 03:03 AM
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IMO
if the tile is laid directly on the concrete and the floor is level the you should have no issues. The tile will not compress so the force is transmitted directly into the concrete. A layer of good underlay between your stand and the floor to prevent a high point and the resulting pressure might not be a bad idea.
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Biocube 29 est 05/05/08, Koralia 1, 30lbs live rock, ,yellow tail blue damsel, pair cinnamon clowns, baby snowflake eel,Toadstool , metallic green mushroom, assorted zoos , kenya treen 180gall display, 190 pds live rock, virgate rabbitfish,bluejaw trigger, bubblletip anemone,yellow tang, sailfin tang,melanarus wrasse, cloud wrasse, 
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#5
05-27-2009, 03:13 AM
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My 225 is on the main floor which is tiled. I haven't had it filled long-term but I don't expect to have any issues. My floor is very re-enforced to avoid sagging which I think would definitely lead to cracked tiles. A concrete floor should be gold. My tiles however are ceramic and have no irregularities which helps.
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#6
05-27-2009, 05:05 AM
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A flat and true base for the tile and you'll be fine. If it is a new house with relatively young concrete, you should install an isolation membrane like Schluter Kerdi to prevent shifting as the concrete ages. Use porcelain tiles which are about as hard and strong as you can get.
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