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Thread: 'Galaxy Jungle' CRASH!! Reply to Thread
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  Topic Review (Newest First)
12-14-2009 01:59 AM
A Hill Any updates?
10-09-2009 06:02 PM
kurosuto hmm the anaerobic bacteria seem to make sense. Why not get some MTS?

i think its hydrogen sulfide.
10-09-2009 05:33 PM
Hilde I see you have pearl danio in there. At 1 site read that they need a 20gallon tank. How are they doing in the 10 gallon? How many do you have?
10-09-2009 05:18 AM
Originally Posted by Phoenix-cry View Post
Ack!!! WTF?

So yesterday was my monthly 10% water change day. I syphoned up the sand and noticed a little more icky black stuff than normal, but nothing alarming. Everyone was happy and swiming around. After the water change (and yes, I remembered my Stress Coat, I put in about six times as much as I need) the fish looked more stressed than usual. I chalked it up to the fact that I had discovered another baby betta and I kinda spent a little too much time chasing him around the weeds.

So I turned off the lights for the day and let everyone rest.

This morning the tank is a murky white, it REEKS, half the shirmp are dead and everyone is skimming the surface.

The ammonia has spiked so high it is embarassing.

My prize betta Albi male is in this tank getting a rest from the female, he's white as a sheet. I pulled him out and dripped him to the grow out tank. Once in the grow out he darkened again, but his gills are cherry red and he's breathing hard.

I've just done another 10% in desperation and the fish are settling down.

The question is: what would cause this sudden break down in a very well established, full planted tank? I checked the DIY CO2 and there has been no back up, its running just fine.

I've known tanks to crash like this when the owner hasn't cleaned in ages and then suddenly does a 75% water change, but I only did 10% and I do it on a monthly baisis.

Any thoughts?
It sounds like your sand substrate which compacts very easily compared to other substrates became anaerobic (lacking oxygen). The anaerobic bacteria which grow under these conditions will release toxins into the water such as hydrogen sulfide, which is toxic to plants and fish.

Since your sand substrate is so light in color you would be able to tell when the sand was becoming anaerobic because it would start to turn black. When someone is using sand as a substrate, it MUST be stirred gently on a weekly basis to avoid toxic areas occurring.

If the sand becomes anaerobic, pockets of hydrogen sulfide gas will form and when those pockets of gas are disturbed it will be released into the water column, killing and/or greatly harming the inhabitants.

BTW: Your tank is AWESOME!!!!
06-24-2009 02:51 PM
Phoenix-cry Well, there is the 'if it ain't broke don't fix it'...but looks like something was broken this time. giggle.
06-24-2009 01:25 PM
finfan never used stresscoat, but good to know, phoenix... imo its best to stick with what works for each of us, i've done things that are not "conventional" for tanks and it works just fine for me, so there is no need to work on something that is not broken
06-24-2009 09:11 AM
sewingalot I was a big user of Stress Coat myself. Here are a couple of links on the subject I actually bookmarked back in October if you are interested: and
06-24-2009 04:28 AM
Phoenix-cry Hmmm...I've dosed Stress Coat this way for years...but normally in much larger tanks so the ratio wouldn't be so drastic. Hmmm... I'll keep that in mind next time! Urea, eh? That's no good!

Geeze, makes me worry about the fact that at petsmart we used to put two pumps of the stuff into the little tiny plastic bag with the fish for their ride home! Here guys...have a massive dose of urea.

Urk! I just looked up diazolidinyl urea on wikipedia, here's what it had to say: " Diazolidinyl urea is an antimicrobial preservative used in cosmetics. It is chemically related to imidazolidinyl urea which is used in the same way. Diazolidinyl urea acts as a formaldehyde releaser."

Hmmmm...suddenly I'm seeing Stress Coat in a whole new light. I've been told for soooooo long that it is harmless in just about any dose. But now I think I'm going to have to use this stuff more carefully.

You may just have found my mystery reactant.
06-24-2009 03:13 AM
sewingalot Your tank is absolutely stunning. No wonder I could never find the plant gold. You should sell some of it on the S&S with a picture of your tank. It is very well scaped and such health plants!

By the way, the stress coat could have caused the crash. Have you seen the ingredients?

5%-30% aloe vera gel by volume,up to 7.5g/l carboxymethyl celluse,about 1.3 to 25g/l polyvinylprrolidone,about 12.5 to about 60g/l sodium thiosulfate.up to 2g/l elthylenediainetetraacetic acid,about 0.3 to about 1g/l tris(htdroxymethhyl)aminomethane,and about 1.3 to about 4g/l diazolidinyl urea.

In regular doses it is fine, it is when you overdose you can actually cause an ammonia spike. I killed off a whole tank this way last summer.
06-24-2009 12:59 AM
Phoenix-cry Weekly? Not happening. Giggle. I've always worked on a less is more and it has worked for me for years. I think this crash was a case of too many blackworms that didn't get eaten.
06-23-2009 03:49 PM
Originally Posted by finfan View Post
sorry about your loss, but 10% water change a month seems low
Weekly water changes are recommended.

But at least everything's ok now
06-23-2009 01:27 PM
Phoenix-cry Yesh! This morning all is fine and in the end I only lost two shrimp. HUG
06-23-2009 01:03 PM
finfan any update? has it stabilized?
06-22-2009 11:42 PM
Phoenix-cry Ten percent a month has always worked for me in the past and everyone has been doing the spawning thing. When I syhpon the sand I just 'hover' over it. Very odd.
06-22-2009 02:47 PM
finfan sorry about your loss, but 10% water change a month seems low, but that is what you have been doing for a while w/o any problem and you had all kinds of success with fish spawning, so i don't know, did you maybe stir up the substrate? that still would not necessarily explain a huge ammonia spike, so i'm no help, hope you figure it out
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