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syphon with live sand?

9994 Views 15 Replies 7 Participants Last post by  caferacermike
I have only done water change since changing my substrate over to live sand last week. I did it by just scooping water out. I have a syphon hose like this left over from my freshwater setup.

Is it recommended to use this with live sand? I'm concerned that I would suck the good microbacteria out of the sand. Of course I would never use it to fill the tank with tap water.

Sorry if this is a dumb question. Thanks.
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I only have about a 1 inch sand bed and I tend to stir the top of it up a little every few days with my hand. This is mainly because my algae blenny leaves tons of excrement everywhere. Is this a bad practice?
I followed what my LFS recommended and went with 40lbs for my 38 gallon tank. This ended up being a little more than 1 inch sand bed. I have a rectangular tank.
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