Forgot to switch the filter back on after feeding
Does a UVC clarifier harm useful bacteria?
Fish become ill / Root smells bad
Open wound on the head of a terrapin
Pressure filters in saltwater?
Which temperature for Discus?
Biological activation delayed by filter "cleaning"
What to do in case of dropsy?
Add hatchetfish to existing fish stock?
Is there a special sera salt for livebearers?
Position of the sera F 700
Fish stock for a 60 cm aquarium
How are fertilizer tablets optimally applied?
Hornwort floating at the surface?
How can I regulate the suction with the sera gravel washer?
Severe infection of goldfish
Setting up an aquarium anew while it is in operation
Are Butterfly Cichlids suitable predators for Guppy babies?
How can I help a fish with unspecific symptoms?
sera baktopur: Application tips
"Moss balls" / Food amount
Guppy-like fish with orange and black pattern - which species is this, and how can I keep them? (Endler's livebearer)
Live rock from the Mediterranean Sea: Which salinity?
Shell dwelling cichlids have become more aggressive
Black Widow Tetras (Gymnocorymbus ternetzi) spawned
Fish stock for a Lake Malawi aquarium / Slimy layers
Newly added Cardinal Tetras are pale
Should I leave angelfish eggs with the parents, or should I raise the fry separately?
White worms in the aquarium
Does a power outage cause harm?
Trigonostigma (formerly: Rasbora) espei are courting
Ulcer on a dwarf gourami
Black Mollies have protruding eyes and skin slime
Does sera phosvec bind phosphates permanently, or can they get back in solution in the aquarium?
Plants do not grow but dissolve
Which food for small and finicky fish?
Worms and Hydra
Blue-green algae / Cyanobacteria
How can I lower the iron level?
Replacing an aquarium with a bigger one
Angelfish have damaged fins after transfer
Brown layers on plant leaves / Diatoms