You will find here a real support composed of free videos to help you managing your own aquaponics ecosystem. 

New videos are frequently published. If you would like a specific subject to be developed, please leave us a comment below.


First we recommend you to register and see our free aquaponics webinar, see the teaser here below:

You can register HERE: https://secure.melbourneaquaponics.com.au/webinar-registrationxz57tqo8

 


The best aquaponics secrets finally revealed

This is the video were I announced that I will now offer aquaponics advice and give my best tips away :)


How to keep your fish tank clean in Aquaponics!

In this video I show you how to avoid organic matters and mud to accumulate in the bottom of the fish tank using a simple tool. This easy task will avoid a lots of problem including fish disease that can appear when the fish tank hygiene is not respected.


How to feed your fish in Aquaponics?

Feeding your fish seems to be a basic task but is actually more complicated than it seem. following the techniques detailed in this video will allow you to grow healthy fish, maximize the growth and minimize the size variation between the fish.

Question from Garry:

Is there any effect on the fish being in captivity? In Tassie they have to feed a chemical to the fish to make it pink as it goes grey. Regards Garry

Response: 

Dear Garry,

Thanks for your question.

Trout/Salmon flesh colour depends on the kind of food they will find. In the natural environment they feed on different animals and sometimes crustaceans such as “gammarus” that contains natural carotenoids responsible for the pink colour. If they don’t find those crustaceans, the colour of their flesh will be white. In aquaculture, artificial colorants such as astaxanthin are added to the food in order to colour the fish flesh up to the customer expectations.

Please note that in some countries such as Switzerland and Germany the consumer is not used to eat pink salmon/trout and therefore the fishfarmers don’t use any colorant and supply a fish with white flesh.

In Aquaponics I would suggest to avoid the colorants in the fishfood you buy as they are useless for the fish.

I hope it responds to your question.

Kind regards,

Jonathan


The Aquaponics DNA principle

In this video I give you an overview of the Aquaponics philosophy. The idea is to produce food with nature, using the life cycle. 


Grow crustaceans in Aquaponics

This series of 2 video will help you to introduce crustaceans in your aquaponics setup. They can very often be mixed with the fish without problem and will clean the bottom of the tank eating the left over of food.


The Golden rule to start your Aquaponics setup

Cycling a system is a critical process, it often lead to success if well managed but can lead to disaster if not done properly. Make sure to check this video if you want to go ahead with Aquaponics 

Question from DQuincey Hjornevik:

OK, I get to not add the fish right away. No fish no ammonia so you add fish food. What amounts of fish food or ammonia for what size systems? No bacteria no Nitrites and so no Nitrates. Thanks for warning about these issues. More please.

Response:

Thanks DQuincey, that is a very interesting question. The general advice is to add a handful of fish food but you are raising a good point here. This quantity of fish food is linked to the quantity of bacteria we will have to develop so I will do my best to give you a bit of technical information:

The quantity of fish food to distribute in your fish tank will be dependent on the temperature (summer, winter), the volume of your growbed and the quality of your media. All those values will have a huge impact on the general biomass of bacteria able to be developed in your system as well as their growth rate and their nitrogen needs. Because we are cycling the system without fish we don’t really mind to give too much food to our bacteria, it will obviously create a large peak of ammonia and later nitrite in our setup but it will slowly decrease as the biomass of bacteria will grow. If you put way too much fish food than needed the bacteria will take a bit longer to transform the whole Ammonia and Nitrite and therefore after a month of cycling you could still have some toxic nitrogen in your water.

I see 2 ways to approach this exercise:

The first option is to develop the maximum biomass of bacteria that the system can handle. Example you have a 1000 litres setup with a growbed of 250 litres filled with very efficient media (small size Scoria/clay balls/other very porous media). As a rule of thumb I know that this kind of media can accept up to 20g of food per 50 litres of media per day (variable depending on temperature) so the whole system could take up to 100g of fish food per day. We know that the bacteria biomass growth is exponential (certain populations of bacteria can double every 20 minutes) so the first days of cycling the bacteria biomass will be extremely low and in the last days the population will be at the maximum. To develop the maximum bacteria population we can simply distribute the equivalent of 5 days of fish food so 500g.

From my perspective this option is not the best as it develops the maximum population of bacteria that the system can handle but it’s never useful as we generally start from fingerlings fish (very small fish). In result it waste too much fish food and if the estimation here is slightly wrong or if the water temperature is too low, the nitrite will take a lot of time to come back to 0 and the cycling process will take more time than necessary.

The second option is to have for aim to develop at least the quantity of bacteria necessary to handle the biomass of fish that you will introduce in your setup just after cycling. The rule to follow is to distribute the equivalent quantity of 5 days of fish feeding in your system. For that imagine the biomass of fish you will have when starting your setup. Let’s take the example a 1000 litres setup that starts with 50 fingerlings of 3g each. The total fish biomass will be 150g. Let’s imagine its summer, the feeding ratio will be around 6% so the total feeding needs will be 9g per day. In 5 days you will approximately need 45g of fish food.

You see here that using those 2 methods, any quantity of fish food between 45g to 500g will correctly do the job. Note that in the worst case scenario if you put too much fish food you will have to wait a bit longer for your toxic parameters to come back to normal, if you put too little quantity of fish food you may experience very little peak of ammonia and nitrite when you introduce your fish but it will probably not be significant as the bacteria population will very quickly adapt to your new fingerlings population. The bottom line is that I personally think that a little handful of fish food will easily do the job for most backyard aquaponics size setup and I don’t think very necessary to bother people with those painful calculations based on estimations anyway. 


Maximize your fish production in aquaponics!

There are a few points to be aware if you want to optimize your fish production. It is always better to grow several small fish than a few big ones as the total biomass growth will be much higher. In this video I will also reveal how the large majority of the trouts are produced, it will probably blow your mind!


How to safely cycle your aquaponics setup

In this video we will what are the main points of cycling a system


Select the right media for your aquaponics setup

Too many Aquaponics growers are using an inefficient media and are therefore very limited in terms of production. In this video I will show you how to select an adapted media that is both very efficient and doesn’t react with the water pH!


Use the right water for your Aquaponics system

The water we are using in our aquaponics setup will stay in the system for a while and can impact the bacteria, the fish and the vegetables so we need to make sure that it is adapted. In this video I will give you some good tips in order to select and use the perfect water for your system.


Select the good water pump for your Aquaponics setup

In this video I will explain you how to select the best pump for your setup. Always keep in mind that the smaller the water pump and the more sustainable your setup will be.


The key point to manage fish disease in Aquaponics

Fish disease can be challenging but if you respect some basic points detailed in this video you will avoid most of them. Always keep in mind that the key is to offer a good environment to your fish and avoid to stress them to avoid the problems.


The number one factor to manage pest and predator on your vegetables in aquaponics

As you know, in all gardens we find bugs that are eating the crop. In classic agriculture the farmers are using pesticides to kill the pest and by doing so they kill the majority of living creatures. In aquaponics we will not follow this principle for 2 reasons:

  • First we can’t use pesticides in our growbeds as the chemicals would contaminate the fish and probably kill the bacteria.
  • Secondly in a monoculture (classic agriculture) there is no biodiversity and once a pest is present it spreads very rapidly on the whole crop. The aim of aquaponics is to produce in a sustainable way and to use the natural cycles. In nature all populations are balanced, each population is regulated by a predator. This is this specific particularity that we use. Working with a variety of vegetable species allow a wide biodiversity of insects and therefore each pest has got a predator present into the ecosystem. Biodiversity is the key to preserve your crop from predators and I highly recommend to have a multitude of vegetable species in your growbed.


Minimize fish stress impact in Aquaponics

A very good trick to keep your fish calm and avoid problems in aquaponics


Tricks to protect your crop in aquaponics

2 easy tricks in order to protect tomatoes and other red fruits in your aquaponics garden. I can’t promess you that it will work everywhere but it worth the try!


3 facts about the bell siphon (in aquaponics)

The Bell siphon is a key component of the aquaponics system. In this video we will see:
1: The purpose of a bell siphon,
2: What it is composed of
3: How it works
A well designed growbed aquaponics system equipped with an efficient bell siphon request a very small water pump and is therefore very sustainable.


Keep your vegetables strong green and healthy

Most Aquaponics beginners are able to produce their first crop successfully but after few months they generally notice that the leaves of their vegetables turn yellow and the plants slowly die. This is often because the plants are deficient in some minerals and we will see in this video that we can easily fix this problem with a simple action…
Click HERE to see this bonus video!

 

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