Squishy-fuzzy brownish membrane growing on things in tank. ..Algae? Looks scary. - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 6 Old 02-21-2011, 05:25 AM Thread Starter
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Squishy-fuzzy brownish membrane growing on things in tank. ..Algae? Looks scary.

Hey guys.

Not sure if this is a disease. Just gonna give you a quick run down of what's happened and maybe someone can identify the problem.

Recently replaced the gravel in my 10 gallon with sand. Since then, here's what's happened:

1. Plants start to die off. Wasn't too worried; fish seemed fine, and I figured the plants might not like the change before I did it, anyway. I added the recommended amount of plant growth stimulator <--- (might be the problem if this is algae).

2. Translucent light brown membrane fuzz starts to grow on things. My Cory's algae wafers are covered in the stuff within hours of my having put them in the tank. The fish won't eat them once this happens. Same happens to any flake food that makes it to the bottom of the tank... covered with fast-growing muck.

3. Today, one of my Corys died. I'm guessing it happened within the last 12 hours because he was alive yesterday. The thing is, his body was covered with the same membranous stuff, and not a small amount of it, either.

Now, while I know decay happens differently underwater than it does above, none of this has happened before. Uneaten Algae wafers used to just break down into smaller pieces and eventually liquidize. I've had fish die before now and don't recall there being membranous fuzz all over them when I retrieved the bodies.

Is this just an aggressive algae? I do water changes weekly. Test strips tell me everything is in order, chemically. Afraid I might lose some more fish over this. BTW, tank population is 5 neons, 3 rasboras, and 2 corys. The tank had been fine for 6 months... then I added sand, and that brings us to today.

What do?
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post #2 of 6 Old 02-21-2011, 06:09 AM
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What were the water parameter readings exactly? I've hated test strips honestly as they're inaccurate. If you can, switch to API liquid kit, retest the parameters and post the results here.

Any pics of the algae?

I think the death of your cory is purely coincidental to me. Sand tends to pack lots of silicates that could prompt algae to develop rapidly. Always vacuum food leftovers after a few minutes. By leaving the foods rotting around, you risk deteriorating the water quality rapidly.

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post #3 of 6 Old 02-21-2011, 06:47 AM Thread Starter
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here's a small amount of the stuff growing on part of an algae wafer left over from today. Is it algae? I'd be fine with it if it was green, but it's just this really unfortunate brownish white; it looks sickly.
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post #4 of 6 Old 02-21-2011, 06:55 AM
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It is molds to me.

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post #5 of 6 Old 02-21-2011, 07:13 AM Thread Starter
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Mold?

Didn't even know that was one of my options, lol..

Thank you, Lupin.

If anyone knows what the protocol is for dealing with an apparent mold outbreak, hollah back! :D
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post #6 of 6 Old 02-21-2011, 07:19 AM
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I'd just scrape them off, vacuum them thoroughly out the tank and try not to leave food leftovers.

How thick is the substrate?

I suggest rechecking your water parameters though since you pointed out you lost a corydoras.

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I think about it every night and day!
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