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Aquasoil basics

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With all the talk on Amazonia pro, I wanted to get some basic understanding of rich aquasoil.

- everyone seems to agree that the richer the aquasoil is, the more the amount of water changes you would have to do initially. Basically meaning that aquasoil leaches its contents into the water and you replace the water. Now….. doesn’t that just mean that you are throwing away what you paid for ? Even if one does a dark start, and minimize the number of water changes one still has to do a water change after the dark start and still end up wasting the nitrate/phosphate?

—— trying to ask then does that mean the only person who benefits from a super rich aquasoil is someone like an insta or YouTube person who wants a quick burst of growth with the initial leaching of nutrition. For everyone else wanting a stable long term system, a not so rich aquasoil which might help the plants a little bit in the beginning but being used more for long term stability and buffering capacity?

- do the plants actually get the boost initially from the root zone or is it more from the leaching that happens and ultimately from the WC? The later makes sense since their roots have not yet developed.

- if one has the whole substrate inside a container with water, wouldn’t water touch all aspects of the substrate regardless of it being capped or not ? How does capping a aquasoil actually help? Green aqua stated that ada recommends capping the Amazonia pro with Amazonia 2.

Curious on people’s thoughts on this.
 
How does capping a aquasoil actually help? Green aqua stated that ada recommends capping the Amazonia pro with Amazonia 2.
During the masterclass at Aquashella, the cap of Amazonia 2 was specifically the powder version. It's primary purpose is just aesthetics and easier planting due to it's finer grain size.
 
During the masterclass at Aquashella, the cap of Amazonia 2 was specifically the powder version. Its primary purpose is just aesthetics and easier planting due to its finer grain size.
That makes sense. Both green aqua and AFA, makes it seem to decrease leaching since they comment on decreasing algae risk, or I am just interpreting wrong. IMG_7874.webp
 
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I’ve seen that claim a lot, especially from people that like to cap with sand. I suppose if it’s a deep enough layer of cap, and you don’t ever disturb it, it might lower the amount or rate of leaching. Then I’ve seen others say that it just breaks down the aquasoil faster and that it shouldn’t ever be capped. Any insights on that?
 

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