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Welcome to Jarek's Underwater Life.

Interested in fishkeeping? Want to have an aquarium? Or just looking for something to read?

The objective of this site is demonstrating my experience with fishkeeping.

Don't know where to start? You can learn what to consider when you want to create your own aquarium.

Frequently out of home? You can learn how to automate your aquarium.

Bored by the on/off light? You can learn how easy it is to build your own energy efficient light that will imitate daylight from the sunrise to the sunset.



Fish and plants purchase

/ Section: Diary / Comments: 0

I bought new fish and plants: Ram cichlid, Electric blue ram cichlid, Angelfish, Goldstripe corydoras and Serpae tetra. Plants: Cryptocoryne balansae, Ludwigia sp. Super Red, Eleocharis parvulus, Hemianthus callitrichoides and Cladophora aegagropila.



Haus des Meeres

/ Section: Diary / Comments: 0

Haus des Meeres in Vienna, Austria.



Application development preview

/ Section: AquaSky / Comments: 0

After 8 months another preview of the AquaSky unit development.



Automatic fertilizer doser

/ Section: Diary / Comments: 0

In September, I increased the fertilizers’ dosage. The fertilizers’ application started to be more difficult. I decided to buy a fertilizer dosing unit.



Fish purchase

/ Section: Diary / Pictures: 10/2019 / Comments: 0

I bought Ram cichlids el. blue, Siamese algae eaters, Bronze corydoras and Serpae tetras. The plants grow very fast and some of them bloomed.




Date: 5/5/2019
Picture: 5
Folders: 0


Date: 17/8/2019
Picture: 11
Folders: 0


Date: 20/10/2019
Picture: 5
Folders: 0