Everything ok, then No2 explosion ! - The Planted Tank Forum
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post #1 of 3 (permalink) Old 04-12-2015, 01:25 AM Thread Starter
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Everything ok, then No2 explosion !

Hello, as title says, I just did a no2 and no3 test, usually my parameters were 0,02 no2 and 8-10 no3.

The tank was going pretty good, I just did a water test and saw that no2 were 2 mg/l and no3 60 mg/l.

2 weeks ago I did the one-two punch method to battle my BBA explosion, but I did it without my biomedia in filter, so it was ok.

Everything was good for 2 weeks but I maybe lost 2 otocinclus because I can't find them, maybe they are the cause to this no2-no3 spike?

I did a 40% waterchange and parameters went down just a little bit, I don't have any more ro water to use, tomorrow I will do another 40 maybe 50 % waterchange , I will also add some more biomedia to my filter (hydor prime 20) , I was thinking about sera siporax, is it good? Or there are better biomedia?

I was thinking also to use some sera toxivec, but I think that water changes will be enough to decrease my parameters, what you think ?

Anyway can 2 little otocinclus really f**k up parameters of a 25 gal tank?

Any advice on what I did and what I am gonna do tomorrow ? thanks a lot !

Btw fishes are ok atm, I can't believe it, I hope they make it untill tomorrow .
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post #2 of 3 (permalink) Old 04-12-2015, 03:56 AM
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Maybe two dead fish, a bunch of dying algae and a partially injured biofilter has resulted in a mini-cycle.... don't forget that the filter media is only a part of your actual biofilter, a lot of the beneficial bacteria reside on plants, ornaments, tank walls, substrate.

Keep up water changes, clean out anything that looks like it isn't alive - leaves/algae/corpses, extra media won't help unless you are already deficient. I've used Seachem Stability before in this situation, seemed to help...
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post #3 of 3 (permalink) Old 04-15-2015, 09:26 PM Thread Starter
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Parameters are going back to normal...i didn't know that dead leaves can cause problems with ammonia / no2 / no3 ...I was used to leave dead leaves there in the tank !
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