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Old 02-20-2018, 04:50 PM
ohashimz ohashimz 目前離線
Join Date: Sep 2016
Location: USA
Posts: 446
Default depleted zeolite rocks

Hello forum,
anyone reuse the zeolite rocks after exchanging them? have anyone used them for extra substrate surface in the sump? am looking in to adding the old rocks to the sump just to increase the substrate but not sure of there is any negative impact from doing so.
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Old 02-21-2018, 03:25 AM
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G.Alexander G.Alexander 目前離線
Join Date: Jan 2005
Posts: 35,271

If the material is still wet you can put some in the sump section as additional surface to host bacteria, works well from my experience. The old wet rocks are also optimal to cycle a different system as you add many bacteria stains with it.

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Old 02-21-2018, 05:46 AM
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Michal Michal 目前離線
Join Date: Dec 2011
Location: in front of my tank
Posts: 564

I did that on my old tank.
Eventually old stones filled up one of my sump's chambers.
I did not see any negative effects but you should put stones in some kind of container or after mechanical filter to prevent them from becoming detritus trap (if you plan to store a lot as I did).

Every day is a journey, and the journey itself is home.
- Matsuo Munefusa
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Old 02-22-2018, 12:11 AM
ohashimz ohashimz 目前離線
Join Date: Sep 2016
Location: USA
Posts: 446

Thank you both
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