Pea gravel "mountains" - The Planted Tank Forum
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post #1 of 4 (permalink) Old 03-12-2009, 02:36 AM Thread Starter
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Pea gravel "mountains"

looking at many pictures for ideas around here and links in people post.
what i keep seeing is a "mountain of peagravel or such in the back corner.
Are these getting all mucked up?
turning anerobic?
getting broken down or stirred up often?
People putting a bubbler in it to keep it "good"?

So i am from a pond background and just hate to have rocks in a pond cause they get mucked up.In these tank it looks like the mountains could be 6-12 inches deep.

so looking for thoughts as i i have a 30 inch deep tank i am thinking of doing and need a different level ideas so i can turn a square tank into rolling landscape.
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post #2 of 4 (permalink) Old 03-12-2009, 04:41 PM
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I am new to the planted aquarium scene so take everything I mention worth a grain of salt, haha. But as far as the "mountain" of pea gravel that your referring to is actually a way of achieving the substrate slope. If you are arranging a planted aquarium and you have an assortment of background, mid ground, and foreground plants they need to be planted in that order. Since the taller background plants have a bigger root system they need thicker substrate to house the root system and since the midground and foreground plants have shallower root systems the substrate doesnt need to be as thick and this is where you get the slope. As far as getting the rolling landscape, instead of making the slope front to back you could do it left to right. Hope this advice helped somewhat. Good luck with the tank.
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post #3 of 4 (permalink) Old 03-12-2009, 09:25 PM Thread Starter
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but what i am looking for is not planting or such.
I am wondering what is happening in the middle of the pile of peagravel.I would think it is being mucked up pretty good and would think hydrogen sulfide gas could start to build up.
I know what a hydrogen sulfide can do to koi(even you and I) so being in a smaller surface area and even less air fresh air contact(wind) i am sure a person can have large fish kill and leave a less desirable odor in the house.

so that is what i am asking about keeping the stone aerobic instead of going anerobic with possible HS gas.are people stirring it up or putting bubbler in it something pictures can not tell us(even if a picture is worth a thousand words)
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post #4 of 4 (permalink) Old 03-13-2009, 05:13 AM
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I am throwing this at the wall, maybe it will stick. I have MTS in my tanks, they burrow and are said to help the substrate from going anaerobic. The other thing that you may find some helpful info on is rfugf reverse flow under gravel filters.

I dont think there is much if any info on a soil depth that you are looking for, but it is a start.

I would think that the mountain would settle however

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