what is this in my substrate ?????? - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 11-20-2011, 08:43 AM Thread Starter
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what is this in my substrate ??????

Can anyone tell me what this is??? Is it algae or a chemical build up or something?? Do i need to be worried??
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post #2 of 7 (permalink) Old 11-20-2011, 03:44 PM
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I think there's a decent chance you should be worried, but not for the reason you think. That looks like 6+ inches of substrate. With that depth you can easily build up anaerobic pockets that can harm your fauna. Unless you do regular substrate maintenance you run the risk of killing your critters. As far as that algae goes, it looks to me like cyanobacteria. As far as being worried, you'll have to do some more research and/or wait for some of the other guys here to chime in and see what they think.
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post #3 of 7 (permalink) Old 11-20-2011, 04:05 PM
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I agree with it being Cyanobacteria (the green stuff) but also anaerobic bacteria (bubbles) . If you release this into the tank, you will be in trouble. A massive water change or two should help save the fish.
If this area of the tank was planted you wouldn't have this problem.

I'm sure other more experienced guys will drop by shortly.


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post #4 of 7 (permalink) Old 11-21-2011, 06:53 AM
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We've had something like this (perhaps a little greener) for 3 years without trouble. When we re-scaped, I wiped it off. It came back in a month. It only grows as deep as the light penetrates. I figured it was just algae.


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post #5 of 7 (permalink) Old 11-21-2011, 07:07 AM Thread Starter
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Well it's only just 4.5 inches of substrate at the highest point , and thats at only what you can see the rest of the tanks sunbstrate is 3-4 inches , I think I will wipe it off the glass and whilst doing so I will spyhon up the stuff what comes off hopefully then it won't contaminate the water
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post #6 of 7 (permalink) Old 11-21-2011, 07:20 AM Thread Starter
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I think it's only that high from where my peco had dug under some slate to make a hiding place so I thought I'd leave it :/ , so in future i think I won't let it get that high
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post #7 of 7 (permalink) Old 11-21-2011, 08:01 AM
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Quote:
Originally Posted by Bandit1200 View Post
I think there's a decent chance you should be worried, but not for the reason you think. That looks like 6+ inches of substrate. With that depth you can easily build up anaerobic pockets that can harm your fauna. Unless you do regular substrate maintenance you run the risk of killing your critters.
I now have very deep substrate in part of my tank where I have a rocky hill. What kind of substrate maintenance do you suggest? Me and my various bottom feeders keep things tidy. Our EcoComplete substrate doesn't ever seem to get gunky. What are the signs of anaerobic pockets?

Thanks


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