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#1
09/04/2007, 07:28 PM
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high PH ... solution please :(
Hello everybody,
I have a 125G reef tank. It's about 6 month old now. I have Yellow tang, bleny, mandarin. About coral, I have Xenia and 2 kind of poly. One poly doesn't look good (My xenia is growing very fast and very healthy) so I decided to check my water and I was surprise to see my Ph at 8.8 !!!! amoniac, nitrate, nitrite and phosphate are perfect ... sorry I don't test yet the another parameter (should I ?) I have some red slime who's begin to grow ... Somebody have a solution how to decrease my PH ? and what is the cause of that ? I do use a good RO. My skimmer skim perfectly .... I mean I think I do everythink right. I do waterchange every week (about 10-15%) Thank you very much and I apologize if I am doing a lot of mistake in english (I am french) Thank you for your help |
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#2
09/04/2007, 07:45 PM
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There's some pretty good pH articles in the chemistry forum. When I first got my ACjr. I noticed my pH had a very high swing (8.7 or 8.8). Two things brought my pH down and cut out allot of my swings. The first thing I did was add a hob filter filled w/ carbon. I don't know if the flow or the carbon or the filter made the difference but it brought my pH down to 8.5 or so and cut my pH swings in half. Later, I took the filter off and added a refugium on a reverse lighting cycle. This had cut my pH down to 8.32 on the high side and 7.85 on the low side. For my small tank I think the refugium was the biggest help although the flow from it might have something to do w/ it also. YMMV.
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#4
09/04/2007, 11:09 PM
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kalkwasser
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#6
09/04/2007, 11:14 PM
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Are you dosing anything that increases pH? If not, I doubt your pH is really that high. It's likely a measurement error, either your test kit is off or if you are using a monitor it is calibrated incorrectly. There really isn't any way naturally for pH to get that high unless you are adding something to make it that high. If you are using something that increases pH (kalk, some type of sodium carbonate additive) you need to reduce the amount you or adding, or in the case of kalk, cut it with some vinegar.
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#8
09/05/2007, 12:18 AM
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How are you measuring the PH?
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Dan 90 gallon brace-less trim-less external over flow |
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#9
09/05/2007, 12:28 AM
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my bad i get confused
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#10
09/05/2007, 01:38 AM
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kalk can work but also shifts ph high. thats why most dose at night during natural ph spikes to aid in stable ph. i would first use a buffer! dose as instructed. dont use a cheap product and that will harden the water from ph swings.test at night for certain y as ph naturall drops at night and bvuffer stops that.
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DAVID |
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