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
Shell dwelling cichlids have become more aggressive
White worms in the aquarium
Operating a CO2 system without nocturnal switchoff?
Angelfish behave apathetically
Does a UVC clarifier harm useful bacteria?
Disinfect quarantine tanks after use?
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