Poison gas under the gravel? - The Planted Tank Forum
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post #1 of 4 (permalink) Old 07-22-2017, 05:39 AM Thread Starter
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Poison gas under the gravel?

I have a question about this whole Poison gas under the gravel?

I was organizing some new plants and some junk got sired up and some large pocket of bubbles came up to the surface. I do have a powerful filter in the tank and it was clear a few minutes later.

I noticed one of my sword tail fish was breathing hard however I was not sure if he was doing this from before I moved the stuff around.

Will a good mechanical and biological filtration take care of this or should I be doing emergency water change or adding activated carbon to the tank?

Thanks.
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post #2 of 4 (permalink) Old 07-22-2017, 09:34 AM
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It's possible that stirring up the substrate will release pockets of hydrogen sulfide, but the smell is quite obvious and noticeable.

In the future, if you gently stir your substrate (or better yet, have well developed plant roots or snails that burrow), you should be able to avoid production of hydrogen sulfide.
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post #3 of 4 (permalink) Old 07-23-2017, 06:13 AM
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Quote:
Originally Posted by Merriallynchian View Post
I have a question about this whole Poison gas under the gravel?

I was organizing some new plants and some junk got sired up and some large pocket of bubbles came up to the surface. I do have a powerful filter in the tank and it was clear a few minutes later.

I noticed one of my sword tail fish was breathing hard however I was not sure if he was doing this from before I moved the stuff around.

Will a good mechanical and biological filtration take care of this or should I be doing emergency water change or adding activated carbon to the tank?

Thanks.
Darkblade is right on. We don't want the 'gunk' sitting for long periods of time. While it's not as easy to clean substrate in a planted tank as it is in a non-planted tank, the goal should be to keep things stirred up as much as possible. It gets really challenging when one uses root tabs or the like for ferts. What kind of substrate do you have?
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post #4 of 4 (permalink) Old 07-23-2017, 06:44 PM Thread Starter
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Originally Posted by moze229 View Post
Darkblade is right on. We don't want the 'gunk' sitting for long periods of time. While it's not as easy to clean substrate in a planted tank as it is in a non-planted tank, the goal should be to keep things stirred up as much as possible. It gets really challenging when one uses root tabs or the like for ferts. What kind of substrate do you have?
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