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Old 10-19-2006, 02:45 PM   #1
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pH really low

I was testing water parameters on my ro/di water and the ph is below 7.0. I used 2 different test kits. I then checked regular tap water and it is 8.2. I also checked filtered from refridgerator and it is the same as the ro/di. How do I get the pH to be higher? Is your pH lower with your ro/di system?
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Old 10-19-2006, 02:47 PM   #2
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How much surface agitation do you have?
Is the top covered or tightly fitting?
What kind of salt mix are you using?
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Old 10-19-2006, 02:52 PM   #3
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I haven't mixed the salt yet. I justed tested the pH with water coming straight from the spicket. My husband just hooked the ro/di unit up last night. I have wasted about 7 gallons of water and then tested the pH. Will filling a 5 gallon bucket and addding salt make the pH go up?
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Old 10-19-2006, 02:58 PM   #4
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Ahhhh, ok, no problem there. I thought you were talking about the pH in your tank. This is what I do:
1. Friday: add salt/water/ph/heater.
2. Saturday: let salt dissolve, test add water/salt depending on salinity.
3. Some time Sunday: Remove old water, clean equipment in old SW, add new, premixed water....The ph should get your pH up...remember, surface ripple in the premix bucket.
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Old 10-19-2006, 03:05 PM   #5
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Ok. I will make 20g of water today and hopefully the pH will be up tomorrow. We are going to get our first fish on saturday, so I want to have a water change before I get the fish. I am nervous about getting fish and excited. I don't want to mess anything up. Wish me luck.
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Old 10-19-2006, 03:34 PM   #6
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8.3 for tap is high but the 7 for ro/di is right where it’s supposed to be. Only thing you might have to do when switching from tap to ro/di is add a small amount of ph buffer depending on the salt brand but do it sparingly since too much can cause a crash in ph.

Any ph range of 7.8 – 8.4 for saltwater if fine as long as it remains steady and doesn’t fluctuate too much.

Is this your first pwc since setting up the tank? Make sure you match ph/sg/temp carefully to your main before adding especially when doing 25+% pwc like this.
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Old 10-19-2006, 04:06 PM   #7
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I have been doing pwc for 4 weeks now. I usually do 15g water changes every week.
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Old 10-19-2006, 04:28 PM   #8
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Quote:
Originally Posted by scrmom
I have been doing pwc for 4 weeks now. I usually do 15g water changes every week.
You will do great keeping that kind of pwc schedule
Have you figured out what kind of fish you want yet or what your first fish is going to be?
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Old 10-19-2006, 04:37 PM   #9
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Just doing PWC`s will buffer your water also. Weekly PWC`s are excellent. Cant wait to see pic with that first fish
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Old 10-19-2006, 05:52 PM   #10
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Just echoing the others. pH for RO/DI is supposed to be 7, so you are right on track.
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