Help new guy understand Ph adjustment - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 02-02-2018, 03:37 PM Thread Starter
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Help new guy understand Ph adjustment

About to set up a 60 gallon tank with heavy plant growth and driftwood. I plan on CO2 injection and lots of guppies, which require harder water. I'm shooting for a Ph of 7-7.3, hardness of 8- 9 and alk of 4.

My outdoor faucet water, after 36 hours sitting has a Ph of 8.2, hardness of 7, and alk of 4.1. So I need to lower my PH by 1, which seems like a lot.

After some research I have come to the preliminary conclusion that I need to go ahead and get the tank planted, start the CO2 injection and THEN see what my Ph level is after the CO2 and driftwood has had their affect. Am I correct? Or should I adjust the water with chemicals or a natural method beforehand, which unfortunately will also lower my hardness, which I need for guppies.

I have RO water in the house but also a water softener, so using this water to lower Ph will also lower alk and hardness, so that adjustment method will cause more issues.

I'm hoping that the CO2 and driftwood in the tank will lower the PH by 1. Is that possible? Is there a way to predict the CO2 affect on the Ph of water?



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post #2 of 4 (permalink) Old 02-02-2018, 07:20 PM
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I would think that it would be best to wait to add anything to lower it. I just had a problem where i wasnt getting the correct co2 rate with the kh i had and couldnt get the co2 to 30ppm with my ph at 7. I have a ph regulator so i just turned it down so the co2 would be added until the ph lowered to 6.6. Once i did that my co2 reached 30ppm. Idk how far the co2 injection could lower it but i would wait and adjust it after you have "finalized" what you want in the tank.
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post #3 of 4 (permalink) Old 02-03-2018, 05:37 AM Thread Starter
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Thanks, would you also go ahead and plant the tank or get the Ph down beforehand?

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post #4 of 4 (permalink) Old 02-03-2018, 10:00 AM
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That would depend on if you have any sensitive plants in there. I would think most plants would be fine to plant now
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