Piranhas in an aquarium
Veiltail goldfish in an aquarium
Can I keep aquarium fish in a pond during summer?
Cleaning pH electrodes
Fish as snail removers?
Dwarf Gouramis are courting
Should I leave angelfish eggs with the parents, or should I raise the fry separately?
Rot zones in the bottom gravel
How do I carry out a proper quarantine?
Disinfect quarantine tanks after use?
Add hatchetfish to existing fish stock?
Wound on a Black Molly
Socialization of Discus
Which size for a beginner's tank?
Fish have scratches
What is the best way to attach moss to a root?
Eggs or sporangia on Java fern?
Guppy-like fish with orange and black pattern - which species is this, and how can I keep them? (Endler's livebearer)
Lighting time in an aquarium?
What to do in case of dropsy?
How is a fluorescent tube constructed and what do you have to observe during operation?
Trigonostigma (formerly: Rasbora) espei are courting
Bottom gravel is clogged by sludge
Water cloudiness and bottom ground mix-up
What to do in case of brush algae?
Replacing an aquarium with a bigger one
Questions about breeding Colisa lalia (Dwarf Gourami)
Angelfish have damaged fins after transfer
Brown layers on plant leaves / Diatoms
What to do in case of floating algae in the aquarium?
Gluing rocks and decoration with silicone
Shell dwelling cichlids have become more aggressive
How can I soften dry food and remove the air it contains?