San Francisco water KH - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 09-21-2004, 05:58 PM Thread Starter
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San Francisco water KH

Those who live in San Franciso, what KH and GH have you measured out of the tap? I did a quick KH test using the Tetra test kit and I believe the KH I got is somewhere between 1.5-2 degrees. Is that what you are getting also?

I am setting up a CO2 injected planted tank for the first time and I need some feedback on what others using SF tap water are doing to achieve a good chemical balance for plants and fish.

Any feedback from SF locals would be appreciated.
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post #2 of 9 (permalink) Old 09-21-2004, 10:08 PM
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Try emailing sfbaaps for the "Dixon, Steven T. Aquatic Plant Nutrition for SF Tap Water" article. Sounds about right. Membership might still be free, and you could get a ton of info off there email list.

http://www.sfbaaps.com/ReferenceList.htm
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post #3 of 9 (permalink) Old 09-21-2004, 10:12 PM
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At the end of this page is what I got for san jose,
http://www.aquascapingjournals.com/j...llon_setup.htm
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post #4 of 9 (permalink) Old 09-21-2004, 10:51 PM
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This link may help

http://sfwater.org/detail.cfm/MSC_ID.../holdSession/1

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- Eheim 2028 Pro II - 8w AquaUV Sterilizer - 48" Aqualight 2-65W 6700K & 2-55W 9325K - (4) 3/4Watt Aqualight Lunar Blue-Moon-Glow LEDs - 160lbs EcoComplete substrate - Dupla Therm 500 substrate heater w/Temp Control - Hydor ETH300 inline heater - pressurized Co2 w/pH controller - Reactor 1000 CO2 - & lots of other misc. crap
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post #5 of 9 (permalink) Old 09-22-2004, 02:18 AM
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Down on the peninsula(Belmont) tap water is typically KH of 3 and pH=8.5-9.0. I think we are the same water, but not for sure.

The golf course I work at in San Francisco though has a KH of 2-3 and pH of 8.3.

Either way, with CO2 of 1 bps I got the pH down to 7 which is about 10ppm and if you increase the CO2 you should be good, no?

Side note, what is/are your favorite plant/fish stores?
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post #6 of 9 (permalink) Old 09-22-2004, 04:09 AM
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Just a note here. Tap water pH should be tested after it has rested for a minimum of 12 hours and 24 hours is much better.

Also note that if you look at the pH/CO2/kH chart and find the 2 ppm range that's in the normal range of CO2 concentration in water. So if you have a pH of 9 and a kH of 2-3 you know that the water company is adding something to the water to raise the kH.
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post #7 of 9 (permalink) Old 09-22-2004, 07:30 AM
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Hey, someone from around my area! Im from San Carlos. Maybe we can arrange for some plant trades or something. I have a bit of rotala wallachi that needs a haircut.... Rather give it to somebody than throw it away!
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post #8 of 9 (permalink) Old 09-22-2004, 09:35 PM
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EvilKen,

Sounds great to me, but unfortunately I don't have much to trade with. Maybe some Rotala indica or Contortion vals, but that is about it. Somewhat of a newbie here. Either way, PM me and possibly we can set something up.
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post #9 of 9 (permalink) Old 09-22-2004, 10:56 PM Thread Starter
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Thanks for the input. The tank is now regulated with CO2 injection at 6.8 and my KH is around 1.5-2 degrees. Per the table, that puts my CO2 at aound 7-10ppm. It looks like I have to decrease the pH to around 6.6 to achieve a CO2 level at the minimum recommended 15ppm.

If I regulate the pH to 6.6 over the next few days to get more CO2, will this adversely affect my fish too much? I am used to keeping the tank at around 7.2 without injection.

Regarding plants, I am in SF and I have some large Anubia that I can trade. I have had the Anubia for the last 6 years before starting a high watt planted tank and they have grown from a few small rizome clippings to foot tall plants.

I need some fast growing green and red plants now that I started the injection before I get too much algea buildup.
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