[問題] 這種活石可以嗎?
目前養水30天綠藻長出,
但是ca :480ppm kh:8 mg:1100ppm
Ca有點超標
是我買的不太一樣活石造成的?
http://i.imgur.com/WITqAML.jpg
左右兩邊的,很像珊瑚石。
這種可以當活石嗎?
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