Water Paremeters and Co2 - The Planted Tank Forum
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post #1 of 3 (permalink) Old 03-15-2006, 04:07 PM Thread Starter
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Water Paremeters and Co2

Well, some background I have a 120 gallon tank and it contains 6 - 6" Red Belly Piranhas. I have my lights to stay on for approx 12 hours. Also have been using the Sechem pellets that you put into your substrate for ferts. The plants have only been in the tank for about 1.5 weeks.

Three days agon I checked my water paremeters directly fromt the tank and here is the results. Also to note this is well water.

PH - 6.0
GH - 100
KH - under 10mg/l 0.5

Two days ago I tested my tank water, tank water that has sat out for 24hrs, and well water. Here is the results.

Tank Water (sat outside for 24 hours)
pH = 6.2
GH = 180ppm
KH = 10ppm - .5

Tank Water (directly from tank)
pH = 6.0
GH = 160 ppm
KH = 10ppm - .5

Well Water
pH = 8.1
GH = 60ppm
Kh = 180ppm - 10

That same day I did a 25% water change and here is the results:

Gh - 120ppm
Kh - 50ppm = 2.8

Yesterday I checked my tank water and here is the results after the water change.

pH = 7.2
GH = 100ppm
KH = 50 ppm = 2.8

I have started adding baking soda yesterday to bring up the KH and will test tonite to see where I am at. Once the KH is up around 4 I am gonna start pressureized Co2.

I have been told that a 1 ph drop will equate to approx. 30ppm of Co2.

What are you guys thoughts???
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post #2 of 3 (permalink) Old 03-15-2006, 04:09 PM Thread Starter
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Also I have been so busy with ordering lights, building a nice hood that last month or so I have been slacking on my water changes. I have read that over time with out water changes your Ph and KH will drop is this true?
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post #3 of 3 (permalink) Old 03-15-2006, 04:13 PM Thread Starter
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Also think that adding the baking soda right now is only a quick fix, think once I get back onto regular water changes my pH and KH will be more stable.

Only thing I am not sure on is if I should leave the Co2 on 24/7 or put it on the timer with my lights.
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