How is my Cycle doing?

NoSCO

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Hello everyone,

This is my first post, although not my first visit to FL. I started reading when I was on night shifts last week, and boy have I learned a lot! But I was wondering if someone can help me out?

Now I understand the general principles of cycling a tank, from what I have read from numerous sources. I understand that for my tank to be considered 'cycled', I need no ammonia, no nitrIte and a reasonable level of nitrAte. Can someone help me interpret my water results? My tank has been fishless-cycling now for 12 days with only the following done:

Occasional 'feeding' of a pinch of flakes (every 2 or 3 days)
So far a whole 40ml bottle of Cycle (over the 12 day period, in iirc, 3 equally spread doses
No water changes (evaporation and testing top-up only)

Tank Details

Size: (LBH) 500x250x300mm
Capacity: 37.5L (8.2 Imperial Gallons)
Born: 09th March 2006
Temp: Maintained 22C

Water Parameters
Code:
[b]10.03.06[/b] - pH: 8.0, NO2: 0.1mg/L, NO3: 5mg/L,  NH3: 0mg/L,  GH: 18°dGH, KH: 15°dKH
[b]11.03.06[/b] - pH: 8.0, NO2: 0.1mg/L, NO3: 5mg/L,  NH3: 0mg/L,  GH: 17°dGH, KH: 13°dKH
[b]14.03.06[/b] - pH: 8.0, NO2: 0.1mg/L, NO3: 5mg/L,  NH3: 0mg/L,  GH: 17°dGH, KH: 13°dKH
[b]21.03.06[/b] - pH: 8.0, NO2: 0.2mg/L, NO3: 10mg/L, NH3: 0.3mg/L, GH: 16°dGH, KH: 14°dKH
Has my cycle just begun? Half way? Nearing the end?

Thanks for your input in advance :-\
 

Jason

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If this is going to be a freshwater tank you might want to up the temperature. also because the bacteria grows faster at higher temps. Probably round 24C-28C would be good. Your cycle seems to have started and your pretty much at the beginning.

Your ammonia (NH3) will rise up tp a max of 5-8ppm, then will go down as your Nitrite increases to around 6-10 then go down and Nitrate will rise t above 10. Seems you've got a few weeks to go yet as ammonia and nitrite are very low. Probably need to add some more ammonia to your tank either pure or more food, say once a day not every couple of days. So the bacteria will grow and multiply with the extra food.

Good Luck and Welcome to fishlore!
 
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NoSCO

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Thank you for your reply

I've wound the temperature up to 30C, hopefully that'll help things along a little, and added more food, and I'll keep feeding on a daily basis and see where that gets us!

Incidentally, does having the hood light on or off make a difference for bacterial growth? It spends most of its time off at the moment.

We've already had a bacterial bloom (day 2 of the tank I believe).
 

Jason

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I recommend that you get live plants as they help break down the toxins, create oxygen hiding places etc. and overall look good. Then you can leave the light on, but I would anyway just to get used to the day night, on off thingy schedule
 
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NoSCO

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Thank you to everyone who has replied

Is it possible I have missed my ammonia spike? I last tested 0100hrs 21/03, with the following results:

Code:
21.03.06 - pH: 8.0, NO2: 0.2mg/L, NO3: 10mg/L, NH3: 0.3mg/L, GH: 16°dGH, KH: 14°dKH
Today, at 0000hrs 24/03, I have these results:

Code:
24.03.06 - pH: 8.0, NO2: 0.8mg/L, NO3: 20mg/L, NH3: 0.0mg/L, GH: 16°dGH, KH: 13°dKH
*slightly confused* ???

Only thing I have changed is to increase my feeding regime (more food, more often), and raised the tank temp to 30C to speed up the cycle.
 

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