Dosing Excel the Night Before? - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 11-11-2014, 03:32 PM Thread Starter
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Dosing Excel the Night Before?

I don't always get up before my tank lights come on. Sometimes it's just an hour after but other times it's much later. Is it okay for me to dose Flourish Excel the night before instead of in the morning?

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post #2 of 9 (permalink) Old 11-11-2014, 03:34 PM
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Someone can give specifics but Excel diminishes over a period of time. I don't think you would get the full (any) use out of it dosing it when the lights are off.
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post #3 of 9 (permalink) Old 11-11-2014, 03:46 PM
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Why don't you change your timer on your lights?
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post #4 of 9 (permalink) Old 11-11-2014, 05:42 PM Thread Starter
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I think changing the photoperiod every week would stress my fish.

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post #5 of 9 (permalink) Old 11-11-2014, 06:04 PM
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I see. I have read that Excel has a half-life of 12 hours in the aquarium.
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post #6 of 9 (permalink) Old 11-11-2014, 06:10 PM
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Quote:
Originally Posted by Fishly View Post
I don't always get up before my tank lights come on. Sometimes it's just an hour after but other times it's much later. Is it okay for me to dose Flourish Excel the night before instead of in the morning?
From what I have read, Excel has a half life of 12 hours. So as long as you are using it consistently once every 24 hours than you should be fine dosing the night before. I was also under the impression that it is best to dose before the lights turn on. I dose each morning around 7am, and my lights do not kick on until around 4pm.

Bump: Per Seachem….Flourish Excel remains 100% active in the water column for 24 hours. It does not de-gas within that time frame. Since it is an organic carbon source, rather than CO2, it will not gas off. Typically, the plants will utilize all of the Excel within the 24 hour period, because it is in a form that is easily taken up by their cells.


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post #7 of 9 (permalink) Old 11-12-2014, 01:53 AM
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I think dosing regularly, even if it is not the optimum time is better than hit or miss dosing because you are trying to hit some specific 'perfect time' but are not home at that time.
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post #8 of 9 (permalink) Old 11-12-2014, 07:27 AM
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Do you need to dose excel daily in a low tech tank? I know that there is a EI low tech dosing suggestion that is about 1/3 of normal dosage give or take but didn't know you needed to dose liquid co2 daily.
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post #9 of 9 (permalink) Old 11-12-2014, 07:56 AM Thread Starter
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I was under the impression that excel was light-sensitive and would degrade within a few hours once exposed to light. Everything I've read about it says that it needs to be dosed daily to work as a CO2 substitute.

I asked this question because I wasn't sure if there were other factors involved in its degradation. I know it's a chelator, but I don't know if it can be neutralized by KH, DOC, etc. That would make dosing the night before pointless.

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