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 Post subject: 200 gallon cycling
PostPosted: May 11th, '18, 23:27 
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Hi,

I am about 5 days into cycling a new 200 gallon. I began the fishless cycling process with a little hydroton from my 10 gal tank, a small pepper and tomato plant, and maybe a little too much Urea. After the first day, I noticed my nitrites were 0.25-0.5, and I was pleased, and ammonia was going up (delayed onset from Urea conversion) I didn't realize how long that would take, peed in it twice... Now, the ammonia reading seems a little beyond the 8ppm max offered by API test kit, and I don't register any nitrites or nitrates. The plants have shown a little growth over the last couple days, but I don't really have a way of knowing if it is from absorbing ammonia, nitrites, or nitrates. Anyway, it doesn't seem like the ammonia level is dropping...

Could I have killed my bacteria with too much ammonia?

I have read to start with plants... Is this wrong, did I pick the wrong plants?

pH is about 7.6-7.8


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 Post subject: Re: 200 gallon cycling
PostPosted: May 12th, '18, 10:16 
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patience young grass hopper - welcome to AP and the major sins of newbies ;-)
I just added a bit more and now have miles too much is a very common situation.

#1 you need plants in the system from the go.
(a) they need to establish along with the bacteria
(b) you need something to use the nitrates from the beginning.

You can run the system 24/7 with lots of splash and let it run its course.
Plants don't respond to excessive/high ammonia so it will inhibit growth.

If your water source is good and you don't have to treat it you could do a water swap to bring it down.
But if your water needs to be aired off, treated etc then just let the ammonia run down - some will gas off.

main thing is to be patient and let things run their course.
It will now just take a bit longer. Your pH levels are fine.


Tomatoes and peppers wont go very well in a nitrogen dominated system.
They like other nutrients which often new systems don't initially have much of.

You may be best to get some leafy greens in. Cos lettuce is a good one that grows quite well.
Hardier than most other types, not too large in the grow bed and good to eat.

Go for seedlings rather than seeds as you need something to use up all the nitrates as it is being produced.

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Darren ( dlf_perth )

May the fish sh*t and the plants grow.....


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 Post subject: Re: 200 gallon cycling
PostPosted: May 14th, '18, 04:08 
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thank you. I am about to start some chard. wasn't sure what else would do well summers in North Carolina, US... Cos lettuce should? Know of any others?


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