changing substrate

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hey everyone

go sharks ha ha.........

I want to replace my substrate in my fowlr system anything I should know?
 
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get aragonite it looks awesome but the price is awesome as well another option is playsand thats what i am going to use, by the washed type and washe it a few times before you put it in
 
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I already got some crushed coral,but what i wnt to know is can I just take out my substrate and replace it with the new substrate
 

Mike

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I wouldn't do it all at once.
Good advice, just syphon some out every time you do a water change, then when it's all gone add your new substrate.
The reason you shouldn't remove it all at once is that trapped detritus will be stirred up, so little and often is better.
 
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