Replacing an aquarium with a bigger one
Which food for mangrove crabs?
Severe infection of goldfish
What to do in case of floating algae in the aquarium?
Which preconditions are required for Fighting Fish?
Angelfish has damaged fins
Algae problems with very low nitrate and phosphate levels
How much sera floredepot is required for a 150 liter aquarium, and how long do the nutrients last?
Piranhas in an aquarium
Fish become ill / Root smells bad
Available water is strongly polluted with iron
Fish have scratches
Can I keep a tortoise in a discarded aquarium?
Dwarf Gouramis are courting
sera baktopur: Treatment duration
Can I keep aquarium fish in a pond during summer?
Can I use sera bio nitrivec in a stocked aquarium?
Newly added Cardinal Tetras are pale
Fish stock questions for a 190 liter aquarium
Snails multiply too quickly
Angelfish eggs do not develop
Can I also use tap water for preparing saltwater?
How can I build a bypass filter for denitrification?
pH value remains below 6.5 even after a water change
What to do in case of brush algae?
Operating a CO2 system without nocturnal switchoff?
Conditioning saltwater for shrimps
Does a UVC clarifier harm useful bacteria?
Sand and gravel in combination? / How much sand is required?
White worms in the aquarium
Gluing rocks and decoration with silicone
What are "cold water" and "warm water"?
Does sera aquatan affect iron fertilization?
Is sera siporax suitable for housing anaerobic bacteria?
Is it possible to crush sera siporax?
Water becomes cloudy after a water change
What can I do about elevated nitrite levels (nitrite peak)?
How can I protect sensitive plants during a treatment?
Black fin edges after a fin rot treatment
Sudden decrease of water quality and snail invasion