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Aerated Autoclaved Concrete For Making Holey Rock

3849 Views 7 Replies 5 Participants Last post by  Sanjay Roy
Has anyone used Hebel Masonry Block as tank rock-work material? This block is lightweight and easy to cut. It is manufactured from sand, cement, recycled material, lime, gypsum and an aerating agent, aluminium paste. It is moulded, cut and steam pressure cured in an autoclave.

As this building material is very easy to cut, you can easily make and carve "holey rocks". However, I found out that it actually floats and does not sink in water. Nevertheless, I have bleached it and have been washing it for 2 weeks now. I'm still thinking whether it will not be toxic to the fish (after bleaching and thorough washing) and how it will stay at the bottom of the tank. Any comments/suggestions?
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I have read that the material is non-toxic, hence I'm considering using it. However, I would like to know if someone else have tried it before so I can get some feedback.

I like experimenting so I'll give it a go once I have thoroughly cleaned it. I have carved my "holey rocks" and am just giving them thorough washing after being bleached (in 4 weeks I think it may be ready).
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The carved rocks are still smelling bleach and need to be washed well. I don't know how long the smell will go away!!! I wouldn't be game enough to put them in my tank this early as I have already invested so much on fish.
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Thanks for that, Doods. Yes, that's something I should try. Good idea!
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