May be the newbiest of all newb questions - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 02-08-2014, 10:50 PM Thread Starter
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May be the newbiest of all newb questions

Is it safe to place rock on top of fluorite, eco-complete or activ-flora or should it be placed directly on the aquarium glass or is gas build up only an issue with rock over dirt? Thanks in advance for your patience.
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post #2 of 5 (permalink) Old 02-09-2014, 12:01 AM
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Gas build up is not really an issue. Typically it doesn't matter, but the risk of putting risks atop the substrate is that it can shift over time and cause the rocks to fall over. This risk is remedied by placing the rocks directly on the glass. Unless you have cichlids or other fauna that like to dig, this isn't really a problem.


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post #3 of 5 (permalink) Old 02-09-2014, 12:33 AM Thread Starter
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Thank you for the answer. Spending a lot of time planning this tank so desperately trying to avoid a simple mistake that could cause me unforseen trouble.
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post #4 of 5 (permalink) Old 02-10-2014, 09:45 PM
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I pretty much agree with Higher Thinking.

Chemically, it's perfectly fine to set a rock on top of the substrate.

I just don't do it personally, I like my hardscape to be a bit more stable - I bolt my driftwood to slate, and set it on the bottom, under the substrate (usually I put a thin layer of something protective twixt it and the glass). If I were doing rocks, I'd either set them directly on the bottom, or on top of a brick or something like that if I didn't want them buried that deeply.

I think the hardscape looks better if it's rising out of the substrate, as opposed to just lying on top of it.

Plus it saves you that little bit of substrate that won't be of any use under the hardscape...
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post #5 of 5 (permalink) Old 02-10-2014, 11:06 PM
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I agree with the above.

If keeping cichlids or placing really heavy rock I like to put down egg crate on the glass first and fill flush with substrate. Then place rocks. Then add rest of substrate.

http://www.homedepot.com/p/Lithonia-...9?N=5yc1vZc7pv

Used to be a lot cheaper but still not too bad.

Just gives me some piece of mind and protection from diggers or my own clumsiness during rescapes.
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