Fish Fertilizer – Best Organic Fertilizer For Nitrogen/Phosphorus

Hi, it’s Phil from and
today I’m talking about organic fertilizers and now I wanna get into fish. And a fish is a really wonderful fertilizer,
you want to have an ocean fish fertilizer coz that’s where the nutrients are and really
what I want to get into today I use – when I do use fish which is not that much anymore
but I use a liquid fertilizer and there’s two main kind. It’s in an emulsion and a
hydrolysate and I wanna go into the difference between those. So in an emulsion is pretty common and what
it is generally/usually is it’s the part of the fish that aren’t use for other things
like the bone and the head and the guts and things that aren’t use elsewhere. And those are taken and cooked at a pretty
hot temperatures to kill off any bacteria, microorganisms and then it’s gonna be filtered
and stabilized with sulphuric acid or phosphoric acid and so it – because its cooked it doesn’t
retain a lot of the beneficial the oils, the proteins, the vitamins, the enzymes, they’re
killed off. Or if they’re cut off in the cooking temperature
they will have been removed in certain parts of the fish that have been used for – we
use fish for weird things like make up and all kinds of chemistry strange things. So it’s – it’s often gonna be a lower
quality product than a hydrolysate. It’s still useful though if you do – if you do
get that you wanna make sure you wanna get when it’s organic because sometimes they’re
spiked with chemicals so you want one that’s organic. It’s still good but not as good
as hydrolysate. What a hydrolysate usually is, it’s by-catch
so it’s a whole fish but it’s the fish that are caught by accident that aren’t
gonna be use in – aren’t gonna be – aren’t the fish they’re looking for when they’re
fishing. So these are the by-catch and they – what
they’ll do now is they take that whole fish, digest it at a cool temperature with enzymes
then they’ll grind that up and liquefy it. It will still be stabilize usually with phosphoric
acid which I prefer to the sulphuric and the – then its gonna retained the oils and the
proteins are gonna stay and you know they’re not gonna get denatured and then you’ll
have your live enzymes and vitamins. And so it’s usually gonna be a higher quality
product and so that’s the one that when I have used fish I have used it. But overall
either way fish is a very nutritious product coz it comes from the ocean again and there’s
lot of nutrients there and but the nice thing about fish over something like kelp and sea
minerals is it has quite a good nitrogen content and available phosphorus content. And because they put that little bit of phosphorus
acid in there often especially in the hydrolysate, its a – that’s a really good source of phosphorus
and it – that is a chemical and I don’t really advocate with so many chemicals but
that’s one. They might just put there a couple of percent
in there, it’ll just gonna be a couple percent of the final product and its gonna be a really
good source of phosphorus and so they – the fish is really nice when you need that nitrogen
source maybe when you’re trying to start some fruit promotion on – you know in the
middle of the summer or there’s certain plants that really needed nitrogen and phosphorus
is really important too. So that’s what I have in the past I’ve
like the fish for. Now in terms of sustainability this is where it becomes more of an issue.
I’ve certainly look into the sustainability of a lot of fish and when I used to sell organic
fertilizers and I sold it, I found a product that seem to me that they we’re doing a
good job, they were trying to get – I forget what it’s called now but certification from
the marine stewardship council or something, they were trying to do a good job. But I’m just concern that you know we’ve
lost over 90% of the big fish in the sea. Were over fishing and so I just think we need
to, maybe nice if we can find a way to fish more sustainably but we have over 70 billion
people and I don’t know if it’s possible anymore. So I don’t really – I don’t eat fish
anymore, I’m concerned about the health of the ocean, I‘m concerned about the toxicity
in the fish, mercury and heavy metals and all kinds of chemicals. And so I’m kind at that point that I don’t
buy that anymore I still have some in stock that’s why I have been using it this year
and the reason that I’m saying/mentioning it today is because I have/had seen many benefits
from it this year and in past years. And I’m – but I’m kinda you know I’m
not really buying anymore, I’m going more for the sea mineral products now. It doesn’t
have quite the high nitrogen and phosphorus content but it’s a really wonderful product.
It really, I think it’s the best product I think it is better than fish and its more
sustainable. And that is, that is what I am using more
now but I did want to mentioned the fish because that’s – you know it’s a popular one. So if you want to learn more about how much
to use and how much it costs and things like that I will post the link to that below assuming
that you aren’t already in my website.

41 thoughts on “Fish Fertilizer – Best Organic Fertilizer For Nitrogen/Phosphorus

  1. I used to fish heaps, in estuaries, I have always filleted my own fish and when i have done so i threw the guts and oval into a bucket, the filets were rinsed and consumed later. Anyway i had this stray pumpkin plant grow in the backyard and i always just went and dumped the water and guts through a sift onto the pumpkin plant, needless to say that pumpkin grew throughout the whole yard and we got heaps of good pumpkins from this plant, possibly 18 good ones and they were really tasty…

  2. I live by the ocean and was thinking of covering my beds in seaweed over the winter. Than tilling it into the soil in the spring, Good idea or not.

  3. i wouldn't have thought you would use fish since your vegan. i don't use any animal products in my garden and it grows really well.

  4. I think that this would be a much more useful video if you actually showed people how to make the liquid fish fertilizer.

  5. There is a lot more organic options liquid humus is high in phosphorus as well as other macro nutrients as well as some micro nutrients

  6. I'm using nettle fertilizer over here in place of fish fertilizer. Do you have any idea how the two compare? Thanks!

  7. The easiest way to fertilize your plants and make them super healthy is to get some dried seaweed from your store which is super cheap and easy, then chop up the seaweed into small pieces and put it in a large bottled water. Let the seaweed stay in the water for at least a week or two, then use that mixture with regular water to feed the plants. after some time the seaweed will rest on the bottom and you can use the liquid, when liquid gets low just add more water to the seaweed.Try it, goodluck

  8. I have to agree. When I was a kid we'd catch fish and clean them at home. Anything we didn't eat went in the garden. Roses loved it.
    When the Indians taught the Pilgrims to grow corn they dropped a fish in the ground and planted on top of it.

  9. Australia has a serious problem with introduced carp in the inland waterways and one of the ways they are trying to solve this is to harvest the carp for organic fertilizer, pretty much a win win situation. Unfortunately its not cheap to buy so no one is really encouraging its use but it is really good fertilizer.

  10. Thanks Phil, concise, helpful guidance and especially useful on how to prepare the emulsion. Although you mentioned that you prefer the minerals available from sea fish, I wonder if the ecological advantages of using Mississippi-basin Asian carp makes it worth exploring? We also have a phosphorus runoff problem so it seems like the fish might have plenty of both N & P. Any suggestions on how to test the levels?



  12. Your information is not totally accurate but there are many of us growing with aquaponics. I plan on making a fish emulsion when I have a fish fry from my system. Many are doing the same. You need to look at people like me and myna many others in the aquaponics community. We grow fish sustainably.

  13. Often times the easy way is the best way but people always like to make things complicated. Take the fish scraps, dump it in the ground, plant whatever plant over it, cover it and voila, you have the best fertilizer saving you lots of money and effort. People just love to make things complicated and scientific adding a bunch of ingredients that doesn't need to be there in the first place thereby charging you an arm and a leg. Go old school.

  14. I am a retired fisherman and live on the coast.  Four years ago I filled a 50 gallon plastic barrel with in-blown wrack and a couple of weeks later it was about 1/3  full so I stuffed it full again. Two weeks later I stuffed it full again and put a loose lid on it to keep the rain out and the stench in.  I later added about 3 stones of fresh herrings and a basket of apples which were not keeping well. After that I added a basket-full of dead sycamore leaves which had gathered in a corner.  Over the next two years I added small quantities of various stuff which I imagined would contribute.  When The fish went in the flies laid eggs and the surface was a moving mass of maggots so I clamped the lid tight for a few weeks and prevented nature taking its course and swarming us with blue-bottles.  At one stage it seemed to be stopped digesting and on informed advice I added about 2 litres of urine and it seemed to restart it but of course I am not quite sure if it had stopped digesting.  It has a terrible smell but there is very positive news from the several friends to whom I asked to try it

  15. What about jelly fish for fertilizers?., They contain phosphorus, they are gelatinous which might be good for retaining water in the soil, i wonder if they would make a good fertilizer?

  16. Ok I am lost already why ocean and not freshwater and why do you not use fish fert anymore. When I heard that i don't want to listen anymore, what do you use now?

  17. I would check the radioactivity of any fish, kelp or seaweed from the Pacific Ocean due to Fukushima. Koreans have Geiger counters in their fish markets so customers know they are eating safe food. Ditto for the Gulf of Mexico as they are using a toxic substance to hide the oil. That leaves the Atlantic. I take Icelandic kelp personally.

  18. So what brand of Fish food do you use for gardens? Thanks for explaining the difference with the different fish emulsions and fish hydrosolate.. I'm a beginner.. can you recommend a brand??

  19. carp is an invasive species and wasted resource in America, here in Australia there is an industry chomping up invasive carp and turning it into fertilizer.

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