七仔 wrote: Him兄: 我個sulphur NO3 remover 係密封式,要成5個月先降到 0,都唔知係硫磺菌還是厭氧菌 請問你d硫磺珠裹面係咪好多氣泡?唔太麻煩嘅話,可否影張大相睇吓呢 TKS!
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