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post #1 of 6 (permalink) Old 04-03-2006, 01:54 AM Thread Starter
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Ph

Hello,

I recently added a DIY CO2 system to my 12 gallon tank. Since the addition the PH has dropped (as expected). However, I would like to find a way to keep it balanced at around 6.8-7.2. I was thinking of adding some crushed coral to my HOB aquaclear.

Would this cause any issues with CO2 in the tank or with the plants in general?
What is the best way to go about adding the coral? (all at once or just gradual amounts until it is brought up to the proper level).
Or should I find another solution to my low PH. I really just dont want it to go any lower than it already is. Currently it is about 6.2.
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post #2 of 6 (permalink) Old 04-03-2006, 01:57 AM
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What is your current KH on that tank? There is really no reason to add coral unless your KH is really low. If that is the case, i would rather add baking soda then coral.

If you PH has stabalized and your fish are ok, i wouldnt worry about it.

jB
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post #3 of 6 (permalink) Old 04-03-2006, 02:47 AM
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It's easy to reduce the effectivity of DIY systems. If the pH goes too low, try some of that...

Reduce volume of yeast/sugar solution
Use less sugar
Outgas some via surface agitation
Reduce the efficiency of your injection method

Curious too what the kH of your tank water is.


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post #4 of 6 (permalink) Old 04-03-2006, 06:43 PM
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Can't say much of anything without knowing KH except I have a dramatically low KH and use baking soda only for emergencies: crushed coral is slow dissolving, low maintenance stability. Baking soda is all at once and gone tomorrow.
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post #5 of 6 (permalink) Old 04-17-2006, 04:42 PM Thread Starter
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Sorry it took me so long to respond yall. I have had alot of non-fish related stuff going on in my life that needed to attending to.

The Kh in the tank is 89.5ppm (dKH = 5) according to my Aquarium Pharm. test kit.
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post #6 of 6 (permalink) Old 04-18-2006, 01:49 AM
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5 degrees of KH is plenty for using CO2. The problem with using the crushed coral is that now the KH will go up slowly as long as the coral is in the water. So, you will always have to remeasure KH as well as PH to determine the CO2 in the water. I haven't found that adding baking soda only gives a temporary boost in KH. I add a half tsp at each water change, don't bother measuring KH for a day or so, and it stays constant then.

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