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Old 02-17-2012, 02:39 AM   #1
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Dosing with ammonia - fishless cycle - advise please

currently in the process of fishless cycling with ammonia, no seeded material, dry sand and dry rock.
65 Gallon (Red sea max 250)
day 21 today - my first day with ammonia dropping to 0 within 24 hours, nitrates still >5 and nitrates at 10, checked the dKH and seemsto be lowering now to 6 - used to be stable at 7.5, PH has been constant at 8.1.
Should i be nervous and expect a ph drop, is a pwc necessary to replenish the buffer and what should i dose the ammo back up to daily at this stage, any advise would be awesome!
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Old 02-17-2012, 02:54 AM   #2
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I'd just wait for the cycle to finish. Just waiting on the nitrites now.

When you do the large water change after the cycle all your parameters will go up to where they need to be.
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Old 02-17-2012, 03:13 AM   #3
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im just trying to prevent a ph crash that could bring the cycle to a halt, was wondering if the decrease in the alkalinity is a concern?
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Old 02-17-2012, 03:29 AM   #4
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Ive never really paid attention to the PH in my tank, not to say that Ive been correct in my dealings with parameters. it took forever for me to cycle my tank, I did it fish in, and did too many water changes and it kept resetting my cycle. Finally got it cycled a month ago...so much better now! what kind of fish are you going to get?
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Old 02-17-2012, 03:44 AM   #5
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I have never even tested my ph while cycling. When you put that new salt water after the cycle it will raise the ph back up.
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Old 02-17-2012, 03:46 AM   #6
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Quote:
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I have never even tested my ph while cycling. When you put that new salt water after the cycle it will raise the ph back up.
+1. No point in messing with buffers either. Let the cycle finish and check your parameters after you last large water change to get your trates down. Odds are parameters will be where they need to be at that point.
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Old 02-17-2012, 07:40 AM   #7
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From what I understand, a pH crash will stall your cycle. To avoid it, do a PWC to replenish the buffers in your water.

AFAIK, don't worry about dKH.

Keep adding ammonia to keep the bacteria fed well.
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Old 02-17-2012, 11:10 AM   #8
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Imo You do need to check ph while cycling. If it drops it will stall it. I had to do a few Pwc when I cycled my tank for this reason .
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Old 02-17-2012, 01:07 PM   #9
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i will check my ph tonight and see what the level is, having a hard time with API ph testing, have a strange color that does not exactly fit the chart, - my best guess its 8.1 (somewhere in between) hope it's not off the chart low! ammo still drops to zero every day so i think the cycle is still active, considering a ph probe? thoughts?
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Old 02-17-2012, 01:24 PM   #10
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I've cycled and setup over 12 tanks and not once did my ph "crash". Not sure what you have to do to get a crash.... Also doing pwc's during the cycle can just slow it down so I always leave mine alone til it's done doing it's thing.
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