Osmocote+ negatives - The Planted Tank Forum
 
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post #1 of 13 (permalink) Old 01-29-2014, 05:33 AM Thread Starter
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Osmocote+ negatives

I don't know if this has been discussed before, but I thought I'd share some interesting information I learned this afternoon.

I was at an indoor garden shop today talking to the very knowledgeable staff about trying to source micro and macro ferts for use in the aquarium. She had a lot to offer on ideas, some of which I might experiment with.

One thing she mentioned was that Osmocote+ effectively eliminated the ability for other nutrients to be obsorbed and/or released to the water and plants. I had so many questions about things I didn't have a chance to go in-depth about how or why this happened, so that's why I wanted to discuss this here and see if anybody knows about this 'feature' of osmocote+.


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post #2 of 13 (permalink) Old 01-29-2014, 08:35 PM
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Osmocote- eh..
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post #3 of 13 (permalink) Old 01-29-2014, 09:33 PM Thread Starter
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I've had decent results but I want better.

What are your thoughts. More than eh.....

The EI method is a proven method and a good way to really dial in your ferts but can be tedious and I'm a lazy aquarist lol


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post #4 of 13 (permalink) Old 01-29-2014, 10:02 PM
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Google PPR pro method. It only required 20% water changes and daily dosage.

Here is a good thread on ferts https://www.plantedtank.net/forums/sh...1&postcount=37
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post #5 of 13 (permalink) Old 01-29-2014, 10:48 PM
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The only problem I have with Osmocote+ is those little yellow balls that contain the ferts will eventually end up all over the top of your substrate.

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post #6 of 13 (permalink) Old 01-29-2014, 11:08 PM
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I had a problem when I added too much. Sky high nitrates for months. Use in moderation and you will see great growth.

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post #7 of 13 (permalink) Old 01-29-2014, 11:15 PM
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I add osmocote+ in 00 sized gel caps. Spread 4-7 inches apart. Replace every 3 months.
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post #8 of 13 (permalink) Old 01-29-2014, 11:30 PM
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Quote:
Originally Posted by thelub View Post
I've had decent results but I want better.

What are your thoughts. More than eh.....

The EI method is a proven method and a good way to really dial in your ferts but can be tedious and I'm a lazy aquarist lol

I have actually never used Osmocote+, but I am interested in using it. I'm curious about the nutrient limiting factor that the lady speaks of.
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post #9 of 13 (permalink) Old 01-30-2014, 12:00 AM
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I grow a variety of plants both aqatic and terrestrial and can't for the life of me think of where that statement could come from. If you look at the ingredients or think about what's going on, there really shouldn't be a way for a paticular ferilizer to "block" other fertilizers. This type of things can happen when excessive amounts of particular compounds can hinder the absorbtion of others but that wouldn't be unique to osmocote+ unless there is an excess of a particular component. People have long combined osmocote+ root tabs with EI dosing or other water column dosing effectively.
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post #10 of 13 (permalink) Old 01-30-2014, 12:08 AM
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Quote:
Originally Posted by thelub View Post

One thing she mentioned was that Osmocote+ effectively eliminated the ability for other nutrients to be obsorbed and/or released to the water and plants.
What does that mean?

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post #11 of 13 (permalink) Old 01-30-2014, 05:08 AM Thread Starter
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What does that mean?
I wasn't quite sure that's why I was asking around to see if anyone had heard a similar statement. I was going to go over and get more info today but got too busy with other things. I'll try again tomorrow and report back.


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post #12 of 13 (permalink) Old 02-14-2014, 11:02 PM Thread Starter
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So today I got more info on this Osmocote story.

Any chemical fertilizers (like osmocote) will kill and deactivate any organic fertilizers that are available in the dirt or water column. This means if you are going with dirt that has trace organic nutrients in it (like chicken waste, bone meal etc) the O+ will nullify them.

I don't think this really applies to a lot of us because most dose chemical ferts in one form or another (EI or O+ or both) and don't go for the organic method.

Just a little food for thought


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post #13 of 13 (permalink) Old 02-14-2014, 11:43 PM
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Quote:
Originally Posted by thelub View Post
So today I got more info on this Osmocote story.

Any chemical fertilizers (like osmocote) will kill and deactivate any organic fertilizers that are available in the dirt or water column. This means if you are going with dirt that has trace organic nutrients in it (like chicken waste, bone meal etc) the O+ will nullify them.
That's not quite right. I have worked 13 plus years as a Certified Crop adviser making fert recommendations for field crops.

Chemical fertilizers will affect the biological life in soil that make nutrients available to plants but will not completely nullify them. For example Nitrogen fixing bacteria on legumes will become lazy if supplemental nitrogen is supplied.

However, in corn chemical fertilizer and manure work quite well together.

Chemical fertilizers do retard the growth of some soil biology but hit would take extremely high dosages (enough to kill fish) to completely wipe them out.

For example in corn manure and chemical fer

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