Timing of ferts - am or pm? - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 11-30-2013, 07:26 PM Thread Starter
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Timing of ferts - am or pm?

Wondering if there is an optimal time to dose ferts, in the AM so the plants can use them during the day, or PM at lights-out when plants stop photosynthsizing (sp?).

My theory is to do it in the PM as non-algae plants tend to have storage mechanisms available to them that algae do not. They can spend the night absorbing the ferts, while the algae can't. I also heard / read some plants use the night to grow a bit. Some plants grow to outcompete algae and growing at night may make some sense if algae can't grow / consume nutrients at night as well as higher plants.

However, if the speed of absorption is so slow, maybe it doesn't make a difference (if it takes days to absorb a dose, then it doesn't make a difference)

I just spent $30 on Seachem fert series... rather that it not go to feed algae.
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post #2 of 8 (permalink) Old 11-30-2013, 08:40 PM
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im new to the hobby myself but ive read users have had good results adding am before lights. 5 months in with my tank and dose daily 1 hour before lights kick on. seems to be working well, no algea problems here
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post #3 of 8 (permalink) Old 11-30-2013, 08:48 PM
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I use the PPS-Pro ferts, I dose daily about an hour before lights on, it works well but I do dose excel/metricide daily as well. I do not does one day out of 10 of the PPS-pro to let the plants use up all that is in the tank, so far it is working well for me have had no algae issues
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post #4 of 8 (permalink) Old 11-30-2013, 08:54 PM Thread Starter
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Seems to be the AM that is the consensus. Duly noted. Any dissenters?
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post #5 of 8 (permalink) Old 11-30-2013, 09:23 PM
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It makes absolutely no difference what time of day you do the fertilizing. The chemicals being added do not degrade over a 12 hour period, so you don't have to worry that they will vanish before the plants get to use them. In another thread one of us, not me, noted that the optimum time to dose is that time when you are most likely to remember to do it every day. That way you have the lowest possibility of forgetting to dose, which does have some effect.

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post #6 of 8 (permalink) Old 11-30-2013, 10:08 PM Thread Starter
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I think Hoppy is telling me I'm likely over-obsessing over this.

Highly likely.

Thanks all!
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post #7 of 8 (permalink) Old 12-01-2013, 02:20 AM
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Quote:
Originally Posted by pchnts8 View Post
I think Hoppy is telling me I'm likely over-obsessing over this.

Highly likely.

Thanks all!

Hoppy
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post #8 of 8 (permalink) Old 12-01-2013, 04:21 AM
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Quote:
Originally Posted by Hoppy View Post
The optimum time to dose is that time when you are most likely to remember to do it every day. That way you have the lowest possibility of forgetting to dose, which does have some effect.
That's why I invested in a doser.


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