Fishless Cycle Diary

rajseth

Learning FW
Feb 6, 2007
106
0
0
central NJ
There is a lengthy back story below, but, on topic, I am doing a fishless cycle and shall log it daily to document errors and successes! Welcoming all comments and advice...
I know there is a lot of information below - maybe too much - but as a nooB, I sure would have liked to get that much information. As with anything else YMMV, so.....

Setup:
10G glass tank, 50w hydor heater (set at max temp), whisper 10 filter pump, 10# gravel, several pieces of stone and slate for decor - probably 8-9G of actual water staying at 85F
API Freshwater master test kit. API tap water conditioner for refills. Gravel probably has nitrobacter (see backstory below)
All tests being performed by my kids (supervised) to keep them involved. Graphs are being plotted, and may even get posted.

Day 1 - 5 p.m.
got ammonia bottle from local grocery store (A&P)- ingredients soft water, ammonia, surfactants - 2 qts $0.89 (seemed OK - who knew surfactants were no good :sad:)
dosed 1cc - checked NH3 - 0.25 - 0.50
added 10cc more - NH3 - 8 ppm

Day 2 - checked levels in a.m.
NH3 - 2-4 ppm, nitrites 2 ppm - :D yee haw - second stage!!!

discovered that surfactants are no good for the little fishies - so I bought different ammonia - duane reade (NYC), $2.49 - with no surfactants
That evening I drained the tank (maybe left 2 quarts in gravel and filter) and refilled with dechlorinated water at 85F
Checked levels before adding new ammonia - NH3-0.25, nitrites 2 ppm :eek:
added 2cc ammonia - NH3 - 1 to 2 ppm
added 5cc ammonia - NH3 - 8 ppm


Thoughts, analysis, etc.

Ammonia - I did the math from the 7cc => 8 ppm to get that the ammonia is 40000ppm NH3. Roughly 1cc ~ 1ppm for 9G water.

Surfactants - I figure with the 95% water change done now, and the 90% I shall do again sometime, and the 90% I will do at the end, they will be at 0.05% of their original strength - so should not matter.

Nitrites - I was surprised to see 2ppm nitrites after I did a full drain and refill leaving only filter water and gravel - do they stick to the gravel or the stones???


Background -
8 yr old kid got Betta in a vase for Birthday (with pre-clearance - we were willing to plunge into pets)
Betta was unhappy at room temp (60 nite, 65 day) so got a 10G kit from PetSmart - Betta Happy!!
Now hooked - decided to get a larger 29G tank - connected it to existing 10G tank and transferred the Betta into the new tank - probably first mistake.:o not waiting long enough to wash everything out and soak it.

Then went to LFS (same as where the Betta came from) and got fish for other 2 kids - 2 each leopard & zebra danios - second mistake - no quarantine.:o probably got some new pathogens in the new fishies.
Nitrites running .25 to 1.0 - despite water changes. LFS said don't worry - but I did H2O changes anyway
1 danio died 2nd day - then betta got bald white spots on head. treated for ick with salt & "super ick cure" - no luck, betta died. :sad:
No cycle yet.:sad:
so now - in interest of not killing more of these little guys - leaving danios in 29G & doing fishless cycle on 10G tank - they are no longer connected.
Will log fishless cycle for other newbies.
 
Day 3:
NH3 - amazingly 0!! :bday:
NO2 - 2.0 ppm - same as Day 2 level.
NO3 - 5-10 ppm
Could it be that all the ammonia (8ppm) got oxidized to NO2, and an equivalent amount of NO2 got oxidized to NO3?? If not, should not the NO2 reading have been a lot higher? Any Chemists out there - please elucidate.

That would imply that a lower load of NH3/NO2 - more in keeping with the capability of the whisper 10 filter - could be completely handled => my cycle is complete :D

Well, lets see. I added 4cc of NH3, and checked - 4ppm NH3.
Tomorrow, if the NH3 is 0 again, and the NO2 is not going up, then the NO3 has to be up - else the Nitrogen is going to the twilight zone..:huh:

P.S. in the fishy tank the NO2 are hanging below 0.25 - will be slower progress I think - but the danios swim around happily!!
 
Day 4:
NH3 - 0 again - so I guess the nitrosomonas, or whichever bacteria the experts now say oxidises Ammonia to Nitrites is well established.
NO2 - 2.0 same as days 2 & 3 - I don't know why this does not go up
NO3 - 5-10 again - no cycle yet...... but I don't know where the Nitrogen is going???
pH - down to 7.6 - it is over 8.5 when I add Ammonia - as it should be.

added 4cc of NH3 - lets see what tomorrow brings.
If me bacteria colonies can dispose of 4ppm Ammonia a day - I shall be in good shape :dance2:
This fishless cycle is a good thing!!
 
An excellent exercise rajseth. My compliments. I have looked at similar progress of fishless cycling and so far only determined that I am not well equipped for the job. Keep it up. We all learn something this way.
 
An excellent exercise rajseth. My compliments. I have looked at similar progress of fishless cycling and so far only determined that I am not well equipped for the job. Keep it up. We all learn something this way.

lol... hereford your funny.


your doing a great job. 4cc of NH3..... this just makes me feel bad... i just dump in ammonia..... i do test just to make sure where i am at.
 
An excellent exercise rajseth. My compliments. I have looked at similar progress of fishless cycling and so far only determined that I am not well equipped for the job. Keep it up. We all learn something this way.

Oh c'mon hereford - you can do it - I know nothing and I'm doing it. It's been easy so far.

I also just figured out my nitrate mystery :duh:. Seems that the hobby nitrate tests convert Nitrates to Nitrites, then test for nitrites. So, don't bother testing for nitrates till nitrites are gone - it doesn't matter anyway. all the nitrates in the world do not a balanced cycle make while nitrites have their way
 
Lets try something new

Day 5:
NH3 0
NO2 2+
NO3 - cant test them till NO2 goes to 0!!
pH 6.8 - Here come the acids!!

Since the nitrosospira (or nitrobacter in old think) are so robust - I am going to give them a workout - I dumped in 15cc ammonia. I don't know if excessive NH3 inhibits nitrification or not, so lets find out.

Day 6:
NH3 8.0 ppm - not bad - they ate 6-7 ppm NH3
NO2 - 1.0 - either some got converted to Nitrates, or the excess NH3 suppressed the nitrification
pH 6.8

I shall give it another day to see if the NH3 will come down, if not, I am going to have to drain some water and re-dose with NH3 - maybe I will give it two days.... I think they can do it!
 
Mistake to learn from

Well - that ammonia loading experiment did not work - who knew :huh:

NH3 - 8.0
N02 - 0.5
pH - 6.0
Nitrites are actually going down :dive: , without Ammonia getting lowered:sad: . I just hope that is because the excess ammonia inhibits the nitrosospira / nitrosomonas - as opposed to KILLS them!!!

So I drained the tank (90%) and reloaded. Ammonia was 1%, so I dosed another 2cc to get to 3ppm NH3

This is meant to be a learning exercise - so now I know to keep the ammonia at a reasonable 2-4 ppm. Fabulous.
 
previous was Day 7
Day 8:
not tonight dear, I have a headache......:sick:

See yous tomorrow
 
Day 9: Back on track....

NH3 0
NO2 2.0
pH 7.2 (pH from tap is high ~ 7.7 so the pH spike came from when I did the refill on Day 7)

re-dosed with 3cc NH3 to yield ~ 3ppm NH3

So at least overdosing NH3 did not kill the bacteria - just seemed to inhibit their appetite/performance.
:idea: Instead of playing it safe (and not learning anything) and keeping the Ammonia at 2-4 ppm, I shall now try to increase Ammonia dosing by 1ppm/daily to seek the threshold of inhibition. I just got impatient and jumped to 15ppm - was a non-scientific mistake. The whole goal of this exercise, and this diary, is to learn more about the process, right?! Maybe the efficient dosing is somewhere between 3ppm and 15ppm - in which case, I will certainly try to find it!!

tune in tomorrow sports fans!!
 
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