Does hornwort not grow roots?
Fish have scratches
Fish stock for a 60 cm aquarium
Air bubbles at the surface and cloudiness after setup
Is a CO2 system by all means necessary?
Which fluorescent tubes?
Is it possible that no elevated nitrite levels can be detected a few days after a nitrite intoxication?
Worms and Hydra
Angelfish eggs do not develop
Water cloudiness and bottom ground mix-up
Replacing an aquarium with a bigger one
How can I protect sensitive plants during a treatment?
Kribensis (Pelvicachromis pulcher): Questions about behavior and species they can be kept together with
First fish stock for a 60 centimeter aquarium
Hornwort floating at the surface?
Does the sera blue sky support algae growth, and is it suitable for planted aquariums?
Questions about stocking a new 200 liter aquarium
How much sera floredepot is required for a 150 liter aquarium, and how long do the nutrients last?
Setting up a low-current tank for gouramis
Snails multiply too quickly
Female Butterfly Cichlid attacks newly added male
What can I do if goldfish multiply too strongly?
Which preconditions are required for Fighting Fish?
Discus and Altum angelfish together?
Which fish can be kept together with Fighting Fish?
"Crystal Red" shrimps in a 25 liter aquarium
Operating a CO2 system without nocturnal switchoff?
Angelfish behave apathetically
Does a UVC clarifier harm useful bacteria?
Disinfect quarantine tanks after use?
Shell dwelling cichlids have become more aggressive
White worms in the aquarium
Gluing rocks and decoration with silicone
Fish become ill / Root smells bad
Water change rate and filter cleaning
Setting up an aquarium anew while it is in operation
pH value remains below 6.5 even after a water change