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Old 09-20-2004, 02:09 PM   #1
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Should I be buffering my water changes?

The pH in my 20 G QT has been running low--scraping 8 or just under. I've read that pH fluctuates a lot in new tanks, so I haven't worried much. But I mixed up some new water yesterday . . . 6 gallons of IO in a covered rubbermaid tub for 24 hours with a maxijet 1200 (using RO water from the grocery store machine). When I checked the pH, it was only 7.95! So it's not the tank lowering the pH, it's the fresh water I'm adding. I thought salt mixes were supposed to have buffers in them . . .? Should I be adding buffer to the fresh water, or to the tank? If to the water, can I add the buffer before storing the mixed SW for a week or more?

Sorry for the spate of questions, but I can see that I need to get a handle on this sooner rather than later. Thanks for any suggestions.
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75-gallon SW tank with 29-gallon sump
Euroreef ES5-3
2x Maxijet powerheads
Mag drive 9 return
Coralife 4x65 Lunar Aqualight
120 lbs rock from liverocks.com
1 peppermint shrimp and 1 fire shrimp (very shy)
2 black Ocellaris, Squish and Smudge
3 chromis, too identical to name as yet, in QT
10-gallon tropical
29-gallon with two goldies, Carrot and Orangehead
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Old 09-20-2004, 02:43 PM   #2
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Re: Should I be buffering my water changes?

Quote:
Originally Posted by blorkiemom
in a covered rubbermaid tub
That's the reason the pH was low. You need to mix without cover for while to let the pH come back up.

But if that doesn't work then it's not uncommon to need to buffer often in a QT setting.
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Old 09-20-2004, 05:51 PM   #3
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I was wondering about that! I keep the lid on to prevent, you know, junk from getting in there. I'll run uncovered with a ph for a while and see if that helps. I hope so as I don't want to have to battle pH in my big tank, too.
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Rebecca
75-gallon SW tank with 29-gallon sump
Euroreef ES5-3
2x Maxijet powerheads
Mag drive 9 return
Coralife 4x65 Lunar Aqualight
120 lbs rock from liverocks.com
1 peppermint shrimp and 1 fire shrimp (very shy)
2 black Ocellaris, Squish and Smudge
3 chromis, too identical to name as yet, in QT
10-gallon tropical
29-gallon with two goldies, Carrot and Orangehead
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Old 09-20-2004, 09:30 PM   #4
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It's a good idea to use the lid for the most part.. just take it off for an hour or two before you need the water.
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