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JBL TV #15: What is blackwater? Why is blackwater good for your aquarium?

What is blackwater? What does blackwater mean for aquarium fish? Why does the water have a brown colour? Biologist Heiko Blessin explains the importance of blackwater for your aquarium from a blackwater river in the Colombian jungle.

You can find more information about the liquid additive which produces blackwater in your aquarium on the product page: JBL Tropol .

If you would like to produce biotope-friendly blackwater using peat as filter media, you can find out more on this product page:  JBL Tormec activ .

You can also find out more about biotopes in the JBL Themeworld at Biotope (habitat) aquarium types .

© 02.10.2020

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JBL TV #1: Why do plants need a CO2 system in the aquarium?

In this video, biologist Heiko Blessin explains why plants need CO2 at all, why aquarium plants have different requirements and how to connect a JBL CO2 system. CO2 fertilisation for aquariums has never been explained more simply or more understandably!
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JBL TV #2: Why do algae grow in the aquarium and how can you stop it?

When algae take over the aquarium, there are always one or two possible causes. In this video, biologist Heiko Blessin explains very clearly and comprehensibly why algae grow at all and what we aquarium enthusiasts can do about it. The topic of algae in the aquarium has never been explained in a simpler and more understandable way!
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JBL TV #3: How do I get my plants to grow well in the aquarium?

If your plants aren’t growing perfectly in the aquarium, this video will help you. Biologist Heiko Blessin explains clearly and comprehensibly what is necessary for perfect plant growth in the aquarium.
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JBL TV #4: Why do we need a water conditioner for the aquarium?

Have you ever wondered if you really need a water conditioner for your aquarium? Which substances in tap water can cause trouble for our aquarium inhabitants and how can they be neutralised?
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JBL TV #5: What is a pH value and why is it important for the aquarium?

Have you ever asked yourself exactly what makes up the logarithm of a pH value? Why does the pH value in our aquarium matter and how can we influence it?
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JBL TV #6: Why do we need so many food types in the aquarium?

There’s so much to know. What kind of food should we choose? Which food size is right? How much should we feed?
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JBL TV #7: Why do fish die in high nitrite levels and what can be done about it?

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JBL TV #8: Do the plants in your aquarium grow exactly as you want them to?

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JBL TV #9: Why do aquarium fish fall sick and how can we treat them?

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JBL TV #10: How to start an aquarium

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JBL TV #11: What is the general hardness? Is the general hardness relevant in the aquarium?

What is the general hardness and how relevant is it in our aquarium?
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What is the conductivity in an aquarium? What is the significance of the conductance? What effects do salt additions have in the aquarium?
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JBL TV #13: What is carbonate hardness? It is the most important water value for your aquarium!

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JBL TV #14: The current in the aquarium. How much do you need? How important is the current?

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Heiko Blessin
Heiko Blessin
Dipl.-Biologe

Tauchen, Fotografie, Aquaristik, Haie, Motorrad

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