What can I do against cloudiness?
Is the sera fil 60/120 safe for juvenile shrimps?
Nitrite levels remains at 0.3 mg/l for a longer time
Water change after/during a sera costapur treatment
White worms in the aquarium
Does sera phosvec bind phosphates permanently, or can they get back in solution in the aquarium?
Which food for small and finicky fish?
Forgot to switch the filter back on after feeding
White spots on the fish?
How can I regulate the suction with the sera gravel washer?
Dosage of sera ectopur
Disinfect quarantine tanks after use?
Which fluorescent tube in the front position?
What can I do about elevated nitrite levels (nitrite peak)?
Sudden decrease of water quality and snail invasion
Are clam and snail shells harmful in an aquarium?
Can fish change their gender?
Which materials are suited for building caves?
How often should I clean the filter media?
Air bubbles at the surface and cloudiness after setup
sera baktopur: Treatment duration
How can I hibernate goldfish living in a pond indoors?
Black Widow Tetras (Gymnocorymbus ternetzi) spawned
Breeding Platies / Fish stock questions
Total hardness for keeping Koi
Can I use sera bio nitrivec in a stocked aquarium?
Should I combat trumpet snails in the aquarium?
pH value remains below 6.5 even after a water change
Rot zones in the bottom gravel
Should I leave angelfish eggs with the parents, or should I raise the fry separately?
What to do in case of brush algae?
Brown layers on plant leaves / Diatoms
What to do in case of floating algae in the aquarium?
Blue-green algae / Cyanobacteria
Piranhas in an aquarium
What are "cold water" and "warm water"?
How can I soften dry food and remove the air it contains?