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| Notices |
| Water Chemistry Discuss fertilizing methods, and find aquatic plant fertilizers guides here. |
| View Poll Results: How do you monitor CO2 Levels? | |||
| pH/KH CO2 Relationship Chart |
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20 | 13.51% |
| Read the fish: Gasping Fish means too much CO2 |
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23 | 15.54% |
| CO2 Drop Checker |
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67 | 45.27% |
| Examine plant health and signs for algae |
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17 | 11.49% |
| pH Controllers/Monitors |
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15 | 10.14% |
| Other: Please specify |
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6 | 4.05% |
| Voters: 148. You may not vote on this poll | |||
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LinkBack | Thread Tools | Display Modes |
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#62 (permalink) |
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Senior Aquascaper
Join Date: Feb 2008
Location: California, USA
Posts: 119
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It can work if there's no interference.
DC's have a trade off. I use pH and visual cues, calipers on the needle valves(Nupro makes some nice easy to reference handles) mostly myself. I also am patient and slow to adjust the CO2. This prevents over gassing and stressing any fish. I add enough till I need no more. Regards, Tom Barr |
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#63 (permalink) | |
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Junior Aquascaper
Join Date: Aug 2008
Location: Israel
Posts: 3
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Quote:
Assuming that water standing for 24 hours (at 1ATM and in room temperature) contains exactly 3ppm CO2, it will always be 1 degree pH difference to go to 30ppm CO2, no matter what is the KH. There is a simple formula to calculate the exact CO2 level form the pH difference. This formula is based on the KH/pH/CO2 formula -(CO2=3*KH*10^(7-pH)), and it goes like this: Assuming X = Standing 24h water pH - Aquarium water pH CO2=3*10^X Example 1: Standing 24h water pH = 6.83 Aquarium water pH = 5.76 X = 6.83-5.76 = 1.07 CO2 = 3*10^1.07 = 3*11.75 = 35.25ppm Example 2: Standing 24h water pH = 6.50 Aquarium water pH = 5.50 X = 6.50-5.50 = 1 CO2 = 3*10^1 = 3*10 = 30.00ppm Example 3: Standing 24h water pH = 6.50 Aquarium water pH = 6.10 X = 6.50-6.10 = 0.40 CO2 = 3*10^0.40 = 3*2.51 = 7.54ppm Can someone please disprove it? ![]() |
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