what levals do u keep your gh/kh - The Planted Tank Forum
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post #1 of 22 (permalink) Old 12-20-2008, 01:33 AM Thread Starter
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what levals do u keep your gh/kh

what are u keeping your planted co2 injected systems at
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post #2 of 22 (permalink) Old 12-20-2008, 03:18 AM
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1 to 2 dKH normal tap water
~ 3 dGH by adding Equilibrium (GH Booster)

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post #3 of 22 (permalink) Old 12-20-2008, 03:58 AM
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0dkh
~4dgh
I just let the tap water do its thing.


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post #4 of 22 (permalink) Old 12-20-2008, 04:30 AM Thread Starter
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thanks for reply
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post #5 of 22 (permalink) Old 12-21-2008, 01:27 AM Thread Starter
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as of my test tonight im at >1dkh and 5.6gh giveing me on a co2 chart levals of 9.487
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post #6 of 22 (permalink) Old 12-21-2008, 02:46 AM
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Don't trust the chart. It's almost always wrong. And do you mean 5.6 pH or gH? gH has nothing to do w/ the CO2 chart anyway. Crank your CO2 until the fish start gasping, then back off slightly.
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post #7 of 22 (permalink) Old 12-21-2008, 03:39 AM
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Originally Posted by brohawk View Post
Don't trust the chart. It's almost always wrong. And do you mean 5.6 pH or gH? gH has nothing to do w/ the CO2 chart anyway. Crank your CO2 until the fish start gasping, then back off slightly.
Yep. According to the chart I have at most 0 co2 in my tank.


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post #8 of 22 (permalink) Old 12-21-2008, 03:59 AM
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Crank your CO2 until the fish start gasping, then back off slightly.
It's easy to kill your fish this way - and people do. Bring it up VERY slowly, over days at a time. Monitor the fish closely. If your circulation is good, you should be able to keep algae down without going to the maximum amount with CO2.

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post #9 of 22 (permalink) Old 12-21-2008, 05:06 AM
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It is also very hard for an inexperienced aquarium keeper to judge whether or not the fish are "gasping" due to CO2. If you use a drop checker to judge how much CO2 you have in the water you will at least be somewhere near a good concentration. Then you can do the slow increases in bubble rate watching the fish for problems, one of which is fading colors - stressed fish usually have colors fading out, and another is a clustering of fish at the surface, usually in the most stagnant area of water, as if they are trying to breath the air. But, by not trying to use the highest light intensity you can get away with, you won't need that much CO2 anyway to avoid algae problems.

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post #10 of 22 (permalink) Old 12-21-2008, 06:48 PM Thread Starter
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my ph is 6.5 i am well experienced in keeping fish and diseases i have kept full blown reef tanks and fresh water fish for years just new to the hole planted sene with high lighting and co2 injection
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post #11 of 22 (permalink) Old 12-23-2008, 04:27 AM
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The KH numbers posted by everyone leave me scratching my head. Am I reading this right? KH of less than 1 degree for multiple forum members? That is simply not enough, imo, to safely buffer the water. Add some baking soda, and get the KH to at least 3 degrees. All but a few plants also prefer GH to be above 3 degrees (Ca and Mg are essential elements).

To answer your question. I keep my planted tanks at 6-8 KH and 6-8 GH.

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post #12 of 22 (permalink) Old 12-23-2008, 02:12 PM
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Low KH <1-2 really is okay. The 3+ requirement is myth that came out of fear and misunderstanding, as so many of them do.

I have adjusted my KH in the past, but no longer do so. My KH is <1, GH is 3.

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post #13 of 22 (permalink) Old 12-23-2008, 02:25 PM
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Quote:
Originally Posted by imeridian View Post
Low KH <1-2 really is okay. The 3+ requirement is myth that came out of fear and misunderstanding, as so many of them do.

I have adjusted my KH in the past, but no longer do so. My KH is <1, GH is 3.
Agreed, adding 02/oxygen-aerating the water is so much better
for the enclosed eco-system than baking soda any day of the week.

Quote:
to safely buffer the water. Add some baking soda
Air is even more safe.

0-3 on my GH or KH, soft soft soft...

Craig

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post #14 of 22 (permalink) Old 12-23-2008, 04:29 PM
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I have about 9dKH, 12dKH. It's kind of a pain in the butt because I'm not too sure what my tap water is made out of, so I just kind of have to roll the dice and hope I don't have an Mg/Ca deficiency anywhere. It's either that or upgrade to some sort of massive RO system for water changes and do the math everytime to figure out where my KH/GH needs to be to avoid fluctuations.

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post #15 of 22 (permalink) Old 12-23-2008, 06:59 PM
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Same here, KH is less than 3. It's kind of hard to judge that color chart with the AP kit. However, when we first moved in my wife wanted a softener so we called Culligan. He tested the water and said there was nothing they could do to get it any softer. Our GH is also close to 0. I don't add anything for KH but I do add around 1/2 to 1 T of Equilibrium when I do the weekly 50% water change just to make sure the plants have enough Ca and Mg.
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