Hydroponic NPK, can be used for planted tank?? - The Planted Tank Forum
 
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post #1 of 11 (permalink) Old 05-11-2011, 09:03 AM Thread Starter
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Hydroponic NPK, can be used for planted tank??

Hi to all,

This is my first post here, been lingering for quite some time and reading alot.

In my pursue of going EI method, i was trying to source for KH2PO4, seems very difficult to get in Malaysia.

And i stumbled upon this product called greeneden, it's a local hydroponic fertilizer, extremely cheap... and they have given the composition of the product as below. Was wondering can this be diluted and be dosed for my 15USg, high light, pressurized Co2, heavily planted tank?? Composition as below;


GREENEDEN by Logesh79, on Flickr
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post #2 of 11 (permalink) Old 05-11-2011, 01:55 PM
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Quote:
Originally Posted by Logesh View Post
Hi to all,

This is my first post here, been lingering for quite some time and reading alot.

In my pursue of going EI method, i was trying to source for KH2PO4, seems very difficult to get in Malaysia.

And i stumbled upon this product called greeneden, it's a local hydroponic fertilizer, extremely cheap... and they have given the composition of the product as below. Was wondering can this be diluted and be dosed for my 15USg, high light, pressurized Co2, heavily planted tank?? Composition as below;


GREENEDEN by Logesh79, on Flickr

Those numbers seems very high for the planted aquarium. i would not use this product in the planted tank.

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post #3 of 11 (permalink) Old 05-11-2011, 02:02 PM
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Yeah, go for it. Make sure to measure out for your tank. You'd want something around 5mg/l of (P) and 10mg/l of (N).


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post #4 of 11 (permalink) Old 05-11-2011, 03:53 PM
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isn't that premixed fertilizer? i thought it was and those numbers seems to very high in ppm and IMO i thought it would be hard to keep the nutrients in balance.

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post #5 of 11 (permalink) Old 05-11-2011, 04:22 PM
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try looking for alternative ones. i also was unable to find kh2po4 so i got mkp and it seems to be working great.

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post #6 of 11 (permalink) Old 05-11-2011, 07:45 PM
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Oh, find out which (N) they use. If it's ammonia/um based or urea based, it's generally not a good fert for fish and may trigger algae.


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post #7 of 11 (permalink) Old 05-12-2011, 03:01 AM Thread Starter
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Yeah, it's premixed. The website mentioned to dilute 1ml to 2 liter of water.

If 1 ml diluted to 2 liter, it should give me 10mg/l of N and 4.5mg/l of P. Am i correct, is the calculation correct?? or should it be 1ml diluted with 4 liter???

And ohh, it's not ammonia/um based.

Not sure if the Mg & Fe is chelated. Called the dealer, not sure is the answer I've got..
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post #8 of 11 (permalink) Old 05-12-2011, 04:53 AM
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go for it. What's the original volume?


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post #9 of 11 (permalink) Old 05-12-2011, 08:15 AM Thread Starter
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Original volume is 500ml. Thats priced at MYR10. that should work out about US3. 4Liter is priced at MYR100, works out to US30. And this is undiluted volume.
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post #10 of 11 (permalink) Old 05-13-2011, 01:27 AM
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I wonder how they keep the phosphate from precipitating out the iron?

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post #11 of 11 (permalink) Old 05-15-2011, 11:41 PM Thread Starter
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I wonder how they keep the phosphate from precipitating out the iron?
I was wondering about the same thing as well. Anyway, i wont be testing this out, manage to source out all i need for EI in dry form, except for PO4, using Fleet Enema instead.
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