Question about mini-cycle potential
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Question about mini-cycle potential

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Question about mini-cycle potential
Old 01-15-2011, 09:40 AM   #1
 
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Question about mini-cycle potential

My 67g aquarium has been up and running since this summer, and I don't remember the last time I had an ammonia or nitrite reading (so, well established). It is stocked with:

1 x honey gourami
1 x baby molly (about a centimetre long, so I honestly never even count it but thought I'd mention EVERYTHING anyways)
3 x adult mollies
5 x angelfish
10 x harlequin rasboras

There are some plants in the tank. On Wednesday, I switched my substrate from gravel to sand. I did all of the substrate at once, so suffice to say, a large portion of bacteria is gone... I tested my water this morning, and there is still no ammonia, no nitrite, and nitrates are at about 20ppm. If anything wonky was going to happen with a mini-cycle as a result of the substrate change, would it be happening by now? Or would it have happened so quickly that it's already happened and sorted itself out? Does anyone have an idea of how long it would take for the new substrate to establish bacteria? Would you say it's safe to add bottomfeeders now? (I have pretty much decided on yoyo loaches, a group of 5). For an idea of how many plants there are... this is what it looks like now:

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Old 01-15-2011, 11:54 AM   #2
 
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Five yoyos? You are going to love them and they are going to love that tank!
If you tested today and have a reading of nitrate reading of 20 I would "think" that if you mini cycled it's over. You kept your same filter right? I forget the time table on the beneficial bacteria but I "think" the increase is exponential. (better what for someone else who "knows", not "thinks", lol).
That being said, with your current light stocking I wouldn't hesitate to add the yoyos today if it was my tank.
Just continue to check your water parameters to catch an mini cycle, should it happen.
The tank looks REALLY nice!
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iamgray (01-15-2011)
Old 01-15-2011, 12:15 PM   #3
 
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thanks, kymmie!

I never touched the filter at all... it is an aquaclear 110, with the big sponge, a bag of carbon (although the carbon is probably dead by now, i just haven't taken it out because I figured meh, one more layer for bacteria to settle on), and a bag of the ceramic ring thingies on top. I never bothered keeping any of the old gravel to seed the new substrate because quite frankly, i just forgot. dumped it all on the back driveway, and as I watched it all hit the ground, thought "oh crap", i was going to keep some of that." The driftwood stayed in the tank the whole time, and the large rocks were taken out and set aside and put back in... the tops of the rocks dried out but the bottoms were still wet when I put them back in the tank (would that have saved some bacteria as well?).

I will wait until tomorrow (Sundays are half price on live fish for Petland members) and test my water one more time, and then if it's still good, I'll go pick up the yoyos (unless I get other replies here saying that I should wait).

Last edited by aunt kymmie; 01-15-2011 at 12:33 PM..
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Old 01-15-2011, 12:37 PM   #4
 
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I wouldn't run carbon in your tank anyway. Your tank is planted and carbon will suck out nutritents and minerals from the water that your plants need. Your driftwood still retained any beneficial bacteria, not sure about rocks. How does anything "stick" to a rock?? LOL.
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Old 01-15-2011, 04:16 PM   #5
 
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Just wanted to say that your tank looks great! And I agree with AK. I think the tank has already sorted itself out and with you not touching the filter in addition to the bogwood and plants it's pretty safe to say you shouldn't have much problem with a mini cycle.
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iamgray (01-17-2011)
Old 01-16-2011, 03:06 PM   #6
 
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I also agree on both issues. Tank looks very nice. And you will not see any "mini-cycle" with so few fish in the larger water volume with live plants and filter untouched.
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iamgray (01-17-2011)
Old 01-16-2011, 07:26 PM   #7
 
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Thanks, everyone! I went and got the yoyos and they seem pretty content. I have rock caves in the two back corners, and they seem to have really fallen in love with them. They have been busy all day exploring them inside and out, and hanging out in the shade. So far i haven't seen them pestering the angels. I saw one approach an angel but it looked like it was just curious, and went back to what it was doing.

As far as the carbon... I don't plan on replacing it with fresh stuff. Should i remove it and put anything else in its place, like another sponge or anything? Leave it in as i've been doing, for the purpose of having another surface for bacteria (something that can be achieved with the extra sponge anyways)? Or remove the old carbon and don't put anything else in its place?
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Old 01-17-2011, 12:03 AM   #8
 
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I'm so glad your yoyos are doing well. They will be curious about the angels at first but then lose interest and keep to themselves. What kind of filter do you have on your tank??

PS. You may already know this, but thought I'd mention it after just now watching two of my Burmese loaches "tusseling". When "arguing" like this they will completely "gray" out and look like they are ill. Totally normal. The first time I saw one of my yoyos look like this I was convinced she was sick and tried to fish her out of the tank. Good luck trying to ever catch a yoyo in a tank with tons of driftwood without breaking the tank down. I gave up, later saw that her color had completely turned normal, then felt like a doofus after reading about this normal behavior. Just shows you how much I didn't research this fish before I aquired them, lol.

Last edited by aunt kymmie; 01-17-2011 at 12:08 AM..
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Old 01-17-2011, 08:21 PM   #9
 
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My filter is an aquaclear 110.

I never knew that about them graying out... I probably would have worried though if not for your warning!

I have really fallen instantly in love with these fish... they are so fun to watch. I love watching how they interact and play/fight... I think this was the right choice for my tank. :)
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Old 01-17-2011, 11:44 PM   #10
 
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Quote:
Originally Posted by iamgray View Post
My filter is an aquaclear 110.

I never knew that about them graying out... I probably would have worried though if not for your warning!

I have really fallen instantly in love with these fish... they are so fun to watch. I love watching how they interact and play/fight... I think this was the right choice for my tank. :)
Somehow I knew that it would be. The "tomboys" in us like fiesty fish.

PS. Knew you were waiting for this line from me: "Pictures? Where are the pictures of the yoyos??"
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