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于 2002-03-20 10:18 
Hi Kwok29, All the Plenum, fine and coarse sand layer are about 1.5" for my tank. You can find some white plastic board with squre holes in the sign making shop in fish street to separate the Plenum and the fine sand. If you are considering using live sand system then I don't think using 假滴漏 / sump in addition is necessary, or even defeat the purpose of the live sand system. I don't know whether it will work or not. You may ask other expert. I have tried the 'red/yellow dragon' before but for some reason they don't live long. I brought a hermit crab yesterday and it really helps to clean up the sand surface. Cheers.
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