于 2005-03-09 07:48 I don't understand Y using the 生物環?????? take it away little by little like 10% a week...... use 草缸 beacuse 生物環 create alot Nitrates but Nitrates stay in the tank.... Nitrates are absorbed by "macro"草 algae!!!!!!! If I have ur sump(沙缸) I'll dump it and get a sump/fuge 沙缸/草缸........ trust me.........生物環 is not a good idea NEmore.....