Sodium Thiosulphate Pentahydrate Crystals for the removal of chlorine/chloramine from Municipal Water.
Approximately 2 parts sodium thiosulphate crystals to 1 part chlroine.
Please be aware that pH affects the effectiveness of the crystals and that can vary dose rates.
Excess Sodium Thiosulphate will not harm fish. High pH levels can result in excess ammonia being released from chloramines, it is recommended that ammonia removing products such as API AmmoLock be used in conjunction when such scenarios occur.