Nitrite level remains very high for months
Does a power outage cause harm?
How can I lower the water hardness?
Shell dwelling cichlids have become more aggressive
Newly added Cardinal Tetras are pale
How can I soften dry food and remove the air it contains?
Which food for small and finicky fish?
Which food for guppies?
Treating a bacterial infection in a pleco catfish / Combination of sera baktopur and sera baktopur direct
Sudden decrease of water quality and snail invasion
Which materials are suited for building caves?
Female Butterfly Cichlid attacks newly added male
Algae problems with very low nitrate and phosphate levels
Discus and Altum angelfish together?
Total hardness for keeping Koi
Swollen eye and abnormal swimming position
How can I build a bypass filter for denitrification?
pH value remains below 6.5 even after a water change
Fish become ill / Root smells bad
Available water is strongly polluted with iron
Does the sera blue sky support algae growth, and is it suitable for planted aquariums?
What are "cold water" and "warm water"?
Pressure filters in saltwater?
What are the consequences of very high silicate levels?
Peat (sera super peat) against algae?
Is it possible that no elevated nitrite levels can be detected a few days after a nitrite intoxication?
sera ectopur: Application and tolerance
Does a UVC clarifier harm useful bacteria?