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Old 06-28-2010, 03:57 PM   #1
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help on changing cc to aragonite substrate

Hi. I would like to change from a crushed coral substrate to aragonite reef sand because of two things. AA tells me it collects food and waste faster than sand. Also, I will want to add blennies in the future I just love their faces. I now have 4 chromis, 2 stars and 2 snails. Do I replace the old cc all at once or do something like 1/3, 1/3, 1/3 and can a siphon do the work or do I shovel it out while doing a huge water change? I appreciate any and all help.
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Old 06-28-2010, 04:31 PM   #2
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Replace 1/4 of it at a time. Siphon up a 1/4 spot while doing a PWC. Then get a piece of PVC and slide rinsed aragonite sand down to where you want it. This will minimize the cloudiness.
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Old 06-28-2010, 04:48 PM   #3
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i would not add any smaller sand until you've removed all of the larger grain substrate. remove it in increments if you like, but don't add the new stuff till all the old is gone.
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Old 06-28-2010, 05:51 PM   #4
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+1 to Mikes suggestions. Watch your levels after each swap just in case.
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Old 06-28-2010, 07:53 PM   #5
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Also don't forget to put your rock on the glass bottom. Don't sit your rock on top of the sand, some fish/critters like to dig in the sand and might cause your rocks to fall and hurt something (corals etc) or even might break your glass if they fall far enough.
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Old 06-28-2010, 08:10 PM   #6
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changing substrate

thanks for the advice. I'll keep you posted.:p
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