3 Identical Cycling Tanks w/ Different Results! - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 06-06-2018, 01:31 PM Thread Starter
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3 Identical Cycling Tanks w/ Different Results!

I am in the first week of cycling 3 identical 10 gallon tanks and I'm fascinated that despite being exactly the same in terms of size, water, equipment, dosing etc. they're already showing different results after a few days. I know people say every tank is unique, but this is so interesting to me! Has anyone else ever done this and seen the same thing?

All three have the following:

1 internal corner filter (with ceramic media and sponges, air-driven)
1 corner sponge filter
1 Hydor heater at the highest temp (currently measuring 86 degrees in tanks B and C, 85 degrees in tank A)
Daily dosing with Seachem Stability
Pure ammonia dosed in all three on 6/1 (it hasn't come down far enough quite yet to dose again)
1 7500K NICREW LED light

Tanks A and C had visible bacterial blooms on day 3 and started showing nitrates on day 4. Tank A seems to be the furthest along. Tank B has not had a visible bacterial bloom but did start showing a slight nitrate reading on 6/5.

I probably wouldn't be testing all the water parameters daily if it were just one tank but this is so cool to me that I'll continue.
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post #2 of 4 (permalink) Old 06-06-2018, 02:01 PM
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baby...

The bacteria colony doesn't start growing until the ammonia mixes with oxygen in the outside air. Oxygen levels aren't consistent in the air, so this may be one of the reasons for the cycling difference. Are the tanks covered or are they open? There's apparently more O2 being mixed with ammonia in one or two of the tanks than the other.

M

"The fish keeping hobby is very simple. Just change out a lot of water, a lot of the time!"
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post #3 of 4 (permalink) Old 06-06-2018, 02:07 PM Thread Starter
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Originally Posted by MultiTankGuy View Post
baby...

The bacteria colony doesn't start growing until the ammonia mixes with oxygen in the outside air. Oxygen levels aren't consistent in the air, so this may be one of the reasons for the cycling difference. Are the tanks covered or are they open? There's apparently more O2 being mixed with ammonia in one or two of the tanks than the other.

M
Tanks A and B have had Versa Top covers from the day they were set up. Tank C didn't at first, I added the cover to that one on 6/3. Do you think taking the covers off during the cycling process would be advantageous? My only concern with this is I have dogs and the tanks are low enough for one of them to steal drinks from (and she also tries to drink out of the toilet so I think she'd try ammonia water too lol). But I could probably do a mesh or something that will allow for air exchange.
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post #4 of 4 (permalink) Old 06-06-2018, 02:14 PM
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baby...

Uncovering the tanks could make the nitrogen cycle go a bit quicker. But, it's better to keep the tank covered if you have pets that could drink the water. I'd leave them covered just to be on the safe side. The cycle just takes some time. I've never cycled a tank without fish, but I understand using ammonia works.

Have fun!

M

"The fish keeping hobby is very simple. Just change out a lot of water, a lot of the time!"
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