OK ... I have a question in my head that just won't go away.
If it's a dumb question, then I apologise in advance.
Here goes;
Why would anyone use clay pellets as a base in an Autopot + Airdome system?
I've seen many advocate it, but I genuinely don't understand the logic or rationale behind it.
From what very little knowledge I have, clay pellets are used to assist drainage, and also to aid in the oxygenation in systems like DWC.
I get that bit.
But what I don't get, is why you would need either in an Autopot + Airdome system.
Firstly, Autopot is essentially a leeching form of watering - it's bottom up - so why the need for a 'drainage' agent?
Top-down watering ... sure. But a bottom-up self-regulating system? Why the need for clay pellets as a drainage agent?
Secondly, why would you need clay pellets for oxygenation if you have Airdomes?
Also, most also advocate oxygenation via airstone at the reservoir ... so why the need for clay pellets for oxygenation?
If not for drainage, and not for oxygenation, then why?
How are clay pellets at the bottom of an Autopot beneficial?
What purpose do they serve?
Do people use clay pellets in their Autopot systems because of the true science behind it, as a theory?
Or is it just more about convention and its because its what other people did before them?
What am I missing?
Sorry for the dumb question ... I have been struggling with it, but just got to that point where not asking it was harder than asking it.
