Which food for mangrove crabs?
How can I soften dry food and remove the air it contains?
Which food for angelfish?
Which food for spiny eels?
Which food for guppies?
No water changes while being away for three weeks? / Preparing food for vacation substitute
Which food for small and finicky fish?
How are fertilizer tablets optimally applied?
Can I keep aquarium fish in a pond during summer?
Severe infection of goldfish
Conditioning saltwater for shrimps
Snails multiply too quickly
Tiger barb overeats
Piranhas in an aquarium
Treatment of swim bladder infections
How large does an aquaterrarium for terrapins have to be, and what do I have to consider when setting it up?
What can I do if goldfish multiply too strongly?
Loricariids eat plants
Betta has no upper lip
Which preconditions are required for Fighting Fish?
Discus and Altum angelfish together?
Which are suitable sand grain sizes?
Fish as snail removers?
What to do in case of brush algae?
White worms in the aquarium
What to do in case of floating algae in the aquarium?
Worms and Hydra
Setting up a low-current tank for gouramis
Shell dwelling cichlids have become more aggressive
Treating fin rot in a Koi
Total hardness for keeping Koi
Dwarf Gouramis are courting
Is it normal that Altolamprologus calvus grow very slowly?
What are "cold water" and "warm water"?
Does a UVC clarifier harm useful bacteria?