Cycling - pH Question

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semperfi

Aquarium Advice Apprentice
Joined
Jan 26, 2015
Messages
25
Location
Mississippi
Good morning all. I tried to post a thread from my mobile app last night but had all kinds of problems. I am currently cycling a 29g moderately planted, Fluval 306 canister filter, eco-complete substrate, Fluval Aqualife & Plant LED lighting. Those are the basics. I started my cycle on January 23 and planted moderately on January 24 (Five bunches of dwarf hairgrass, One crypto walkeri, Two anubias golden, Two medium java ferns, One red flame sword) and added two pieces of Malaysian driftwood. I have been dosing to 4 ppm ammonia, and I am currently getting rid of approximately 3 ppm every 12 hours. Nitrites spiked off the chart on January 27, and are still off the chart while nitrates showed up on the 28th or 29th (I don't have my journal with me), and have been constant at 5-10 ppm. My concern at this point is that my pH, which was initially hovering from 6.8 to 7.2 began dropping over the weekend. My Kh which was initially 5-6 has also dropped to 2-3. The pH bottomed out on what my test kit (API test tube/solution) would show at 6.0 on Monday evening. I freaked out because I had read that low pH can kill by BB. I did a 50%wc and my pH rebounded to 7.0 within an hour. Last night when I tested, the pH had bottomed out again. I did a 15-20% wc and raised it to 6.4, but this morning it has bottomed out AGAIN. I am really trying to do this the right way but there are so many opinions! Is this something that is normal during the nitrite spike phase of the cycle or should I be alarmed? I mulled over my journal last night to see if I had done anything differently and I couldn't put my finger on the culprit of my pH drop. To give you some handle on what I have added, I dosed the recommended time with Stability, and I have been dosing with Flourish and Flourish Excel as recommended on the bottle. I also conditioned my water with Prime. Any help would be greatly appreciated! Thank You!:thanks:
 
Driftwood will cause the ph to change most of the time.


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The bacteria require alkalinity (kh) in order to process forms of nitrogen. Ph drops are common during Fishless cycles because you are forcing some much ammonia in to the system and so the bacteria use up a lot of alkalinity which is essentially what is keeping ph stable. Water changes or the addition of baking soda should do the trick.


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Crushed coral is also a pH booster.


Caleb

~10g tiger barbs
~45g ick problems/loach and 5 tetras left.
~75g going to be African cichlids
 
Thanks a lot for the help. I feel better knowing that it is somewhat normal.


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Thanks a lot for the help. I feel better knowing that it is somewhat normal.


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It's normal but you're right that ph 6 and below starts to affect the bacteria's efficiency and can even stall the cycle so try to keep on top of it as you have been doing.


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