Substrate Elevation? - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 03-20-2013, 07:26 PM Thread Starter
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Substrate Elevation?

So for my 40b, I'm planning to have a scape where the substrate could reach heights of 10-12".

Now I personally do not want to buy that much ADA AS lol... Any ideas on products that would be safe to put under the substrate to create elevation?

Cinder Block? Lava Rock? What could I do for cheap?

Thanks
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post #2 of 5 (permalink) Old 03-20-2013, 08:25 PM
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I wouldn't use cinder block - I believe they are made of cement and similar materials, and could affect pH/hardness.

regular red clay brick could work, or any sort of silicate stone. For something that massive though, you may want to use something not quite as heavy.

Lots of people have stuffed nylon/mesh bags full of gravel.

Lava rock would probably work pretty well. You may want to add some cheaper (inert) substrate to help fill in the holes, so you don't end up with too much of the expensive stuff funnelling down twixt the rocks.
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post #3 of 5 (permalink) Old 03-20-2013, 08:37 PM
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As far as filler can go, you can go to home depot and pickup play sand. Its inert and like $5 for 50 lbs.
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post #4 of 5 (permalink) Old 03-20-2013, 11:49 PM Thread Starter
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Thanks for the ideas.

I'd probably use inert filler for some of it, but then let the AS go down in between the lava rock at the top, might help give the plants a bit more to root on to actually
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post #5 of 5 (permalink) Old 03-21-2013, 12:11 AM
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You could use safe-t-sorb... its finer than standard gravel. Downside is that its really super dirty. $10 for 40lbs shipped from drillspot.com.
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