Why do you have to do a huge dose of excell after a water change? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 10-30-2012, 09:06 PM Thread Starter
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Why do you have to do a huge dose of excell after a water change?

So why do you need to dose a large dose of excel after a water change?


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post #2 of 6 (permalink) Old 10-30-2012, 09:42 PM
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I don't see a need to do a massive dosing of excel after a water change. excel only lasts for 24 hours so it really makes no sense.
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post #3 of 6 (permalink) Old 10-30-2012, 09:50 PM
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I have a planted discus tank in which I do 2-3 large wcs a week, and dose Excel after each wc, mainly for it's algacide properties (It really helps to keep algae under control) but also to provide a source of carbon for the plants, albeit temporarily.
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post #4 of 6 (permalink) Old 10-31-2012, 04:19 PM
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You don't need to dose a larger than normal dose of Excel after water changes. It isn't even a good idea to do so, if you have Vals, or other plants that are sensitive to Excel. Just do the regular 1 ml per 10 gallon dose every day, whether you do a water change or not.

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post #5 of 6 (permalink) Old 10-31-2012, 08:58 PM
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Quote:
Originally Posted by Hoppy View Post
You don't need to dose a larger than normal dose of Excel after water changes. It isn't even a good idea to do so, if you have Vals, or other plants that are sensitive to Excel. Just do the regular 1 ml per 10 gallon dose every day, whether you do a water change or not.
I think the OP is referring to the manufacturers directions to dose what is basically 4 times the daily dose after a water change of more than 40% or on initial use.

It might be best to direct that question to Seachem.
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post #6 of 6 (permalink) Old 11-01-2012, 01:31 AM
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Quote:
Originally Posted by Jeff5614 View Post
I think the OP is referring to the manufacturers directions to dose what is basically 4 times the daily dose after a water change of more than 40% or on initial use.

It might be best to direct that question to Seachem.
It is Seachem that recommends the extra high dose after water changes. I have seen test results showing that to be a bad idea - the testing done by a competitor to Excel, API CO2 Booster, where dosing a 1 ml/10 gallon daily dose resulted in better plant growth than Seachem's recommended dosages.

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