Are marble/granite tiles safe?????

  • We are currently upgrading MFK. thanks! -neo
You don't need to grout or secure to the bottom. Just place them in there and cut to fit. If you go with slate it will just sit flat on the bottom and will be heavy enough to not shift or move.
 
My brother is a installs granite for a living, I asked him about the stone recently, and he says almost all granite is treated with a sealer, that I belive would be very toxic to fish. The stone can be stripped of the sealer with acetone, but I'm not sure if you can strip the stone of acetone by soaking it in vinegar. I have been wanting to try it but I don't want to lose any fish if it doesn't work.
 
thanks for the link
think i am going to have a trip to B&Q after work to get some black tiles.
i am still gonna keep sand in there but they just kick it all over the place so should look good with the tiles.
 
Sorry for the late reply, marble is safe for aquarium use when looking for a high pH hard water application like african cichlids and salt water. Here is a article on marble. It can be used with rays but is not recomended as you want lower pH's and softer water with rays. The only way I would use it is if I had a water softener or RO. I have granite and ceramic tiles. Porcelain is the best to use if you are not wanting a higher dollar rock based tile.

Marble is the most commonly used metamorphic rock. This rock develops when limestones are intruded by magma, or overrun with lavas. The heat from the molten igneous rock brings about profound changes in the original limestone. Marbles are generally pale coloured rocks of medium to course grain size. The main mineral in marble is calcite; the other metamorphic minerals develop from impurities in the original rock. Due to the thermal alteration of the original limestone, marble is very hard and durable. It is commonly used as a substrate in hard-water Africa aquariums, or as a filter media. It has an excellent buffering capability, and provides a more environmentally friendly alternative to coral products.
 
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