Using seachem ferts are the water changes as big? - The Planted Tank Forum
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post #1 of 27 (permalink) Old 03-21-2008, 09:32 AM Thread Starter
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Using seachem ferts are the water changes as big?

Hi there,

I am still weighing up what fert method to use it's either ei or seachem stuff but was wondering if the water changes needed are as big with seachem stuff compared to those that are needed with ei

Regards Darren


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post #2 of 27 (permalink) Old 03-21-2008, 05:13 PM
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I'd say probably not, unless your setup is very light-intensive? I don't believe that Seachem's dosing regime "overdoses" the way that EI does.

Trial and error are really the only way to go to find the "sweet spot" between dosing and PWC- every tank is going to be a little different.





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post #3 of 27 (permalink) Old 03-22-2008, 01:23 AM
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Sounds about right. Unless you have very high lighting and are dosing a lot of Seachem's ferts, the water changes should be less than with ei ferts.

Plus, Seachem's stuff dissipates from the system after 24hrs. Anything that hasn't been used by the plants, that is.
I still do 40-50% weekly on mine and I use the Flourish line, but I am a total perfectionist so...

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post #4 of 27 (permalink) Old 03-22-2008, 01:48 AM
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Seachem's stuff leaves the system in 24hours? Where did you see that? Are you talking about Prime only detoxing ammonia for 24 hours and confusing that with ferts? (The ammonia is still available for fixing when using Prime, BTW, just non-toxic to livestock)





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post #5 of 27 (permalink) Old 03-22-2008, 02:06 AM
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Think so...I may be confusing it with Prime. I thought I saw that somewhere on Seachem's website. I may be TOTALLY wrong though. I'll head over the site and see it I can dig that up.

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post #6 of 27 (permalink) Old 03-22-2008, 02:08 AM
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Found it. It's on the Flourish Excel FAQs. here's the link. It's like the EDIT-third question down.

http://www.seachem.com/support/FAQs/...Excel_faq.html

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post #7 of 27 (permalink) Old 03-22-2008, 02:18 AM
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I only found this on the Excel FAQ, but I sent Seachem an e-mail to find out if this applies to all the Flourish line, or just Excel. I'll let you know their response.

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post #8 of 27 (permalink) Old 03-22-2008, 02:21 AM
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That's really interesting- I'd never read that- good research!

Based on that, sounds like anyone using Excel to fight algae should dose every 24 hours for best results!





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post #9 of 27 (permalink) Old 03-22-2008, 06:31 AM Thread Starter
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Hi thanks for that,

I really don't know what way to go I have been reading on the net and I think I am more unsure back to reading.....

The concern over the water changes is we are in a biggest drought in 130yrs (our city's water storages are at 9%) and not sure I can justify such massive water changes weekly.

Regards Darren


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post #10 of 27 (permalink) Old 03-22-2008, 09:31 PM
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Wow, I see what you mean. I just now realized that you were from down under! I'd stick with Flourish stuff, with ei, you are dosing excess nutrients, and like I said, at least Excel, if not all of the Flourish line, dissipates after 24 hours.

You could easily go a few extra days without water changes, if need be. Use Prime or other de-nitrifier to take care of any extra waste.

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post #11 of 27 (permalink) Old 03-22-2008, 09:34 PM
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You could back off on the volume of your water changes too by using Flourish. With ei, you're probably doing like 50%, with Flourish, you could easily drop to 10% if you have to.

Got Plants?-6 CO2 + 12 H2O → C6H12O6 + 6 O2 + 6 H2O

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post #12 of 27 (permalink) Old 03-24-2008, 08:31 PM
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Alright, I heard back from the Seachem rep. I guess only Excel dissipates after 24 hours, all the others just stay in the system until used up by the plants.

Got Plants?-6 CO2 + 12 H2O → C6H12O6 + 6 O2 + 6 H2O

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post #13 of 27 (permalink) Old 03-25-2008, 02:15 AM
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Good to know about the Excel- new info to me- thanks!





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post #14 of 27 (permalink) Old 04-03-2008, 05:55 AM Thread Starter
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Thanks for that, are flourish and excel all i should be using as ferts?


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post #15 of 27 (permalink) Old 04-03-2008, 06:36 AM
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Quote:
Originally Posted by duzzy View Post
Thanks for that, are flourish and excel all i should be using as ferts?
Flourish would supply your trace elements and Excel would be your alternative carbon source; what about your macros (NPK)?

Anthony


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