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How to manage ammonia and nitrite | aquaponics water

8,921 views November 6, 2019 7:33

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ChannelMelbourne Aquaponics

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Video description
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One of the main difference between backyard aquaponics and intensive agriculture/aquaculture reside on the fact that we create an environment where living creatures are living in comfortable condition. Unlike the classic food production system we aim to not spray pesticides but to offer the best environment to our ecosystem to avoid the stress and the apparition of disease.
Water parameters are massively important for your fish health. In the nitrogen cycle the bacteria are transforming the fish poo (ammonia) in nitrite and nitrate. Ammonia and nitrite are highly toxic for the fish and we want to make sure we keep them at the lowest concentration possible (below 0.5ppm).
The impact of those toxic elements on the fish are very wide. Among them we can note the following:
o Reduce oxygen in blood
o Attack:
 Liver
 Retina
o Strange behaviour (swim on the side, gasping behaviour)
o Brown gills and blood
o Poor feed conversion
o Poor growth
o Fast swimming
o Fast breathing
o More disease
o Increased mucus production
o Darkening of body colouration
Seeing this long list of terrible effects we can understand the importance of keeping ammonia and nitrite low for the fish welfare!
One of the solution to avoid ammonia and nitrite is to have a very well adapted biological “filtration”. I mean a nice population of bacteria able to transform those toxic elements in nitrate. The trick is therefore to keep a low density of fish compared to the population of bacteria (exact ratio available in the free aquaponics training).
Plants are still in need of nitrate which is their main nutrient so you still need a certain quantity of fish in your ecosystem 
Most fish species will accept 0.5ppm of ammonia or nitrite for a limited period of time but they will appreciate and live more comfortably a concentration between 0 and 0.2ppm.
I recommend beginners to test the water once a week and to monitor ammonia and nitrite. If a spick is detected please stop feeding your fish, renew some water and during the following days decrease the fish biomass by fishing a few fish.
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Link of the vidéo
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How to manage ammonia and nitrite | aquaponics water: youtu.be/D1JvFSjvmaY

About this tutorial

Melbourne Aquaponics published this 7:33 video tutorial on November 6, 2019. It has been watched 8,921 times on YouTube.

Category
Education
Duration
7:33
Published
November 6, 2019
Views
8,921
Likes
121

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