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Unread 06/06/2006, 07:14 AM   #1
jmcmahon66
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PH is plummeting

Spent the past 6 months upgrading equipment. Increased lighting, got tunzes, a Korallin Ca reactor, a Deltec skimmer, and phosban reactor. The results are: crystal clear water, high Ca, good alk, and chronically low pH. I just checked pH probe calibration, and it is fine. I have read Randy's articles, and have dripped kalk for the past few days. This helps while the kalk is dripping, but as soon as it stops, my pH drops again. Tank is in the basement, so opening a window is not really possible. Any advice would be helpful. I just ordered a kalk stirrer for my topoff. I hope this helps.

Parameters:
150g RR Oceanic with 40g sump
1050W metal halides new bulbs
Temp: 80-82
SG: 1.026
Alk: 7.5
Ca: 440
pH: 7.75-8.15 (night to day)
Mag: 1330
PO4: 0.04 per Hanna
All others tests are good per Salifert


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Current Tank Info: 150g RR Oceanic, 750W 20K MH with 300W 14K MH, Deltec Turbo 1060 skimmer, Tunzes with controller, all types of corals-but mostly SPS and Acans
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Unread 06/06/2006, 07:17 AM   #2
Bojan
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I suggest higher aeration.

What skimmer do you have ?
Did you test CO2 concentration in the basement ?


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Unread 06/06/2006, 07:20 AM   #3
jmcmahon66
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I have a Deltec 1060 skimmer which pulls a lot of air. I have not checked CO2 basement levels. Any idea of how that is done?


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I ain't no hula-hoop-eyed, chicken-necked lookin' jive turkey.

Current Tank Info: 150g RR Oceanic, 750W 20K MH with 300W 14K MH, Deltec Turbo 1060 skimmer, Tunzes with controller, all types of corals-but mostly SPS and Acans
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Unread 06/06/2006, 07:28 AM   #4
Bojan
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I checked CO2 in the air based on Randy idea.

Put water form aquarium in the glass. Wait few hours or aerate glass and that you do not need to wait.

Glass have to in the same room as aquarium is (in your case in the basement).

After few hours you can read pH. Based on KH and pH, you can estimate CO2, because during this few hour CO2 in the air and in the water will be in the equilibrium.


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Unread 06/06/2006, 08:44 AM   #5
Charlie Davidson
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Your new stirrer will help . Deltec makes a nice one


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Unread 06/06/2006, 09:42 AM   #6
Spuds725
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If the pH is still low after aerating the glass of water in your basement, then the likely cause is the high CO2 in your house/basement---

Repeat the aeration test outside-- if the pH rises-- then this confirms high CO2 levels

If you really want to fix the root of the problem you will need to ventilate your house/basement with outside air--- this is just a result of houses being very "tight" nowadays...


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Current Tank Info: 125G mixed reef with 135G Sump
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Unread 06/07/2006, 11:40 PM   #7
dead beat reef
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hey jmcmahon66 thats a very nice reef. ph will go up and down
thats normal. welcome to the chem. fun. it will take awhile to
get it down but soon your alka. cal. and ph will be right on.
just a learning curve. your reef looks great. equip. list top notch.
your good dbr


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Unread 06/08/2006, 09:33 AM   #8
Charlie Davidson
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Are you runing co2 on your cal r/x for 8-10 hours a day?


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