水草情迷

請問沙樽用的沙是甚麼沙
何蘭沙???會唔會弄高個KH ??

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唔係荷蘭沙啦, 咁粗粒, 邊吹得起.
係好幼好幼既沙, 可能會係鈣沙黎.
會升kh 的.
草缸其實好少用得著.

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我的水族相簿

我有用呀!
原裝D沙唔要.
換左石英沙.
kh唔知有冇變
ph冇變(ph6.2)
但no3低左好多

A proper denitrification unit require a redox controller, and at least a month break in period which works in a principle that to keep oxygen as low as possible and not too low redox that will form surphur which is toxic while still letting in water for process. I doubt it is 沙樽 that is lowering your NO3. 沙樽 is for nitrification process only.