cycling tank, shuld i not put co2? - The Planted Tank Forum
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post #1 of 7 (permalink) Old 04-19-2009, 09:20 AM Thread Starter
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cycling tank, shuld i not put co2?

tank is cycling right now.. kinda cloudy, should i need to stop injecting co2 in the tank? using 4, 2litre bottles right now.

i know im not suposed to put in ferts, but can i still put the trace elements in so maybe the plants dont turn yellow and die?
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post #2 of 7 (permalink) Old 04-19-2009, 01:06 PM
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What kind of substrate do you have? If you used one of the fertilized substrates (laterite, flourite, et al), I doubt you would need to add trace minerals so soon. Even without the plant substrate, there should be plenty of trace minerals in the water to start. I've seen some people suggest a correlation between overdosing trace minerals and thread algae.
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post #3 of 7 (permalink) Old 04-19-2009, 03:24 PM
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If you run CO2, then it's arguable whether or not you should refrain from dosing immediately or soon after setup. If I had high light and CO2 off the bat, I would, or you are leaving a door open for algae if the sub or water falls short in some areas. Same goes with CO2 if there is ample light. Setting everything in place for optimal plant growth from the get-go is the key to avoiding new tank algae.

I've always wondered if bacteria can be gassed with heavy CO2 as fish can, and possibly slow the cycling process. Makes sense, the main two groups of them in FW are aerobic. But I've never heard anyone advise against it or report these types of issues. I guess we'd be seeing more injected tanks crash if so. Probably not an issue with yeast anyway, maybe possible with a pressurized setup running full blast.

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post #4 of 7 (permalink) Old 04-19-2009, 03:44 PM
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CO2 and O2 don't occupy the same space in the water column. It would take a HUGE DIY system to overload a tank system if its even possible to get >30ppm DIY. Setup with gas and a drop checker CO2 can only help the plants get started. Bacterial establishment won't be affected by the CO2. Light or heavy plant load and no fish inject with your DIY.

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post #5 of 7 (permalink) Old 04-19-2009, 04:13 PM
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A method that works very well, and is very easy to do, is to start the tank with a heavy planting of stem plants, start fertilizing right away, and inject CO2 right away. Your goal is to get those plants growing as quickly as possible, so they can use up any ammonia from the fish almost instantly, thus denying the algae any signal to start blooming. This method also allows you to start adding a few fish in a week or so, gradually building up the fish load over the next few weeks. Heavy planting means having every square inch of the substrate with a plant in it - no bunches of plants, just individual stems. This method works very well for me.

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post #6 of 7 (permalink) Old 04-19-2009, 04:40 PM
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4 2L bottles? how big is your tank
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post #7 of 7 (permalink) Old 12-14-2009, 03:52 PM
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I have a 125g and just did the math for how many square inches I have on the bottom and that is over 1000. Do I really need 1000 stems to start my cycle?
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