This topic has been moved here from Filter Media and Equipment ◇過濾器材◇ by KK, 2002-02-24 01:12 You may read the board announcement or contact board moderators for the reasons.
作者
回覆: 臭氧機
guardian
文章: 151
于 2002-02-15 23:14 Tks, edward. But I still dun know how to check orp? As you stated that if orp is over 300 will harm the livings in tank. But I am confused cuz the shopkeeper who sold me the Ozonizer said that it's safe to use if only a little amount of O3 is applied to tank.