Do you replace/add more substrate over time?

  • With mostly all substrates acting as a buffer, or neutralizing agent - do you add/replace your substrate over time in order to keep this affect stable? Or do you let it run it’s course and let the species/tank decide on how much substrate should be where?

  • From a chemical reaction standpoint, I believe that it would take a large amount of time for any element to be fully released and not able to be re-captured by any substrate. Similar to how many use those (in freshwater) planted tank substrates such as Flourite which will release and soak up specific chemicals.


    I do always try to keep a fine layer around the whole bottom, and dependent on species I will add more in specific areas to try to have them be more comfortable by creating hills in the sand as if it was done naturally by the tide/current.

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