holding substrate in place - The Planted Tank Forum
 
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post #1 of 11 (permalink) Old 10-18-2014, 02:01 AM Thread Starter
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holding substrate in place

Justy wondering what u guys use to hold your substrate in place if u have a slope to it so that it doesn't just flatten out after a little. I was thinking of using some plastic black peaces but idk if thats ok for the tank or not?
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post #2 of 11 (permalink) Old 10-18-2014, 02:10 AM
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It will flatten out over time. You'd need to rescape.

Adding barriers to slopes help. I use natural things like rocks.

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post #3 of 11 (permalink) Old 10-18-2014, 07:24 AM
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The only thing I can think of is some kind of terracing, like they use on mountains to have flat surfaces to grow things on. Otherwise gravity will eventually win out. Maybe hardscaping with flat rocks would work better.

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post #4 of 11 (permalink) Old 10-18-2014, 07:43 AM
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there is an item - TGM Substrate Supports available from thegreenmachineonline online shop based in UK. don't know if it works or not.
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post #5 of 11 (permalink) Old 10-18-2014, 06:19 PM
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I use expanding foam for ponds (it is black) and build retaining walls out of stone and foam. The actual substrate is pretty close to flat between the walls.
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post #6 of 11 (permalink) Old 10-18-2014, 07:19 PM Thread Starter
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Yea I knew about the tgm product but im in the US and that would be a lot of money just to ship sub supports. I think I might use abs plastic. Not sure if it is toxic to fish.but I doubt it since it cant melt or dissolve under water

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post #7 of 11 (permalink) Old 10-18-2014, 08:09 PM
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I just scaped a slope myself and asked the same question….I was advised to use barriers such as rocks to prevent the substrate from leveling out. Also, strong rooted plants will help keep the slope in place. I plan to plant all along the base and wall of the slope to help.
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post #8 of 11 (permalink) Old 10-18-2014, 08:37 PM Thread Starter
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ehh idk u would have to have that rock touching the bottom of the tank to make it hld the substrate in place and even after that i cant imagine it would hold it but what do i know i have never owned a planted tank or ever used a substrate. Im just going to use think sheets of abs black plastic that i can get at my dads work since they use it alot for boats and stuff like that
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post #9 of 11 (permalink) Old 10-18-2014, 09:35 PM
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The rocks I use for this are pretty small, not a problem in contact with the bottom glass, but I also put a thin bead of expanding foam down there, too. Then press the first course of rocks into it.
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post #10 of 11 (permalink) Old 10-18-2014, 10:17 PM
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Haven't used it myself but I have read in Anotherhobbie's tank journal that he is using "egg crate" material that is used in the 2' x 4' light fixtures and sold in stores like Home Depot. Looks like he layered and sort of terraced then filled in the substrate.

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post #11 of 11 (permalink) Old 10-18-2014, 10:47 PM
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Some guy around the forums here breaks apart clay pots and uses that to creat slopes- thought that was a great idea.
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