Default Substrate query - advice needed

alexandre

Junior Poster
Jun 26, 2005
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Has anyone any experience of using the red substrate, as when I stir the black gravel layer which is above the red substrate in my tank, I'm getting quite a lot of gas bubbles appearing. I am quite tempted to remove some of the red substrate and mix it with clay and add the black gravel layer on top of that. I've had my tank set-up for approx. four months now and I've always had this problem with the gas bubbles. I would really appreciate any advice or suggestions as to how I solve this problem.
 

Tom Barr

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Jan 23, 2005
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Re: Default Substrate query - advice needed

Is the gas stinky? Like rotten eggs?
Even then, it's not a issue really, it could be CO2 from bacterial respiration, N2 gas, etc.

My question to you, is why is this bad and why is it a problem?
What evidence leads you to think it is?

I'm not saying it is or is not, but asking for more info.

Regards,
Tom Barr
 

alexandre

Junior Poster
Jun 26, 2005
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Re: Default Substrate query - advice needed

Hello Tom,

No it is not stinky, but I have a little problem with algae and I was wondering if that could be my substrate.
I am dosing 2.5 gr. KN03, 0.2 gr. KH2P04, 2 gr. K2S04 and 5 ml. Flourish 3 time a week (1day macro the other day micro).
I do 40% WC every week (40 G. aquarium).
My other problem is the temperature witch is 32ºC but I haven’t read any where it could cause algae.
Thank you for your advice.
 

Tom Barr

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Jan 23, 2005
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Re: Default Substrate query - advice needed

It's CO2 or N2 gas.

This is somewhat normal.

Remeber that roots pump O2 to the substrate root zone, the bacteria live there respire CO2.

This builds up in low flow places and burps out.

You can deep vacuum a part of the substrate and replant it. Say 1/4 each week during your water change.

I do this about once a year or more sometimes, but once a year is plenty for most tanks.

Regards,
Tom Barr