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Just wondering. Tank has been up for over 1 year. Do you ever change the substrate to refresh it? or leave it alone?
 

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I just leave it alone, the substrate doesn't wear out. I think the substrate gets more seasoned and filled with more nutrients over a period of time.
 

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I have a 55g with a substrate that has been in place for about 10yrs.
 

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Do you just push the laterite into the substrate like with root tabs? Wouldn't that cause a big mess?
 
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