What do these results say about my tank? CO2 too high? - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 11-12-2005, 02:39 AM Thread Starter
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What do these results say about my tank? CO2 too high?

I've got another post going here about my green/hazy water.

I've just tested my tank and the levels are:

NO3 = 5.0 ppm
NO2 = 0.0 ppm
NH3 = 0.0 ppm

GH & KH - I'm new to this test and 3 drops seemed to change the water to the colours mentioned in the instructions (looking straight down the tube).

Ph = looks to 6.8, could be 6.6. I can't be sure and I've tried in different light.

Looking at a chart in another post, does this mean my CO2 is too high? I've not dosed the tank for a few days now and I had been looking at setting up a DIY system. If the levels are already high, I guess I needn't bother.

Will a few partial water changes help?

Thanks in advance
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post #2 of 5 (permalink) Old 11-12-2005, 03:20 AM
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A couple things I'd like to comment on. First of all, check out this really helpful link to Chuck's Co2 chart --> http://www.csd.net/~cgadd/aqua/art_plant_co2chart.htm
By looking at it, if your ph is 6.6, your Co2 is around 23 and if your ph is 6.8, your Co2 is about 14. Either way, it probably wouldn't hurt to crank the Co2 up *a little bit* Most of us find that levels around 25-30ppm works better for plant growth, fighting algae, etc.
My Co2 level stays in the mid-high 30s and everything is going well...no stressed fish whatsoever. In fact, they breed lke mad.
Word of caution, however, be careful if you turn up the Co2 as your water looks to be fairly soft, so you will be liable to get ph swings. One quick remedy for this is to add a little baking soda to the water. Perhaps someone else will have information to add. Good luck!
-Ryan

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post #3 of 5 (permalink) Old 11-12-2005, 03:26 AM
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I heard that adding coral chips in your filter would raise your KH gradually. It takes time, but it's stable.
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post #4 of 5 (permalink) Old 11-12-2005, 03:43 AM Thread Starter
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I should add that the KH & GH test kit was from Aquarium Pharmaceuticals.

From the instructions, 3 drops = dkh of 3 or 53.7ppm.
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post #5 of 5 (permalink) Old 11-12-2005, 06:16 AM
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What's the accuracy range on AP test kits? Naturally, tap water has CO2 levels of 2-3ppm.
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