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Old 01-18-2004, 06:17 PM   #11
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Originally Posted by reefrunner69
As I understand it, ammonium cannot exist at saltwater ph?? Am I incorrect?
It still exists it is just not considered a harmful substance at higher ph values. Corals in fact can utilize NH4 to increase the production of zooxanthellae when combined with low levels of nitrate.

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Old 01-21-2004, 01:39 AM   #12
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I just noticed on the packaging for the Ammonia Remover media that it should be used excluselively in FW as the ionic action will release trapped Ammonia back into SW. Have you guys come across this ? I removed the media immediately just in case.

On a more positive note my tank has spiked and is almost down to the correct levels :

Ammonia : 0 !! Yeah baby
Nitrite : .125 (or as close as I can tell at any rate )
Nitrate : 20
PH 8.3

My new LFS suggested bringing in a water sample this weekend and assuming everything looks good we start by adding some crabs and snails or suchlike. Sound about right ?
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Old 01-21-2004, 02:16 AM   #13
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Never used manufactured ammonia media so I can't help you there. What's the brand?

The numbers sound good but with any nitrite showing, you are still not in the clear. Jumping the gun and adding things too quickly will guarantee problems. I know it hard to resist but I would honestly suggest you wait until next weekend and see where the numbers are.

By then there should be no detectable nitrite and after a good size water change the tank should be ready for a few snails.

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Old 01-21-2004, 02:15 PM   #14
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The brand of Ammonia Remover is Fluval - same as the 404 filter I'm running.

So how long should the nitrite be at 0 before I should think about adding anything ? The way it's been going I expect the nitrite to be at 0 today or tomorrow. Once that happens, you suggest a substantial water change ? I changed about 10% last weekend, how much would you suggest next ?

thanks.
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Old 01-21-2004, 09:02 PM   #15
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Once the cycle is complete, I personally like to do a 40-50% waterchange. Once the nitrite reaches 0, and you do the waterchange, give it a day or two and test again to make sure it remained stable and then you can start with a few snails.
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Old 01-21-2004, 09:05 PM   #16
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Wow - 40-50% ! Thanks again reefrunner69
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Old 01-22-2004, 04:11 AM   #17
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Actually - one other question purely for my own education : Why such a large water change ? I don't doubt your advice, it'd just be good to understand why it should be done.

Thanks.
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Old 01-22-2004, 07:15 AM   #18
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During the cycling process the biological action taking place has a tremendous impact on water quality, nutrients build up in the system, the ph is depressed and nitrates (nutrients) are up. Dilution is the solution to pollution
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Old 01-22-2004, 02:23 PM   #19
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Ah! Thanks. RO/DI is now up and running as my levels dropped to zero yesterday (Well, except for Nitrate that is - that's at 20)
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