Reply To: E-book discretionaries are confusing me

[Robbet]

Thank you for the insight, I’ll wet the sand before forming the slope for the added rigidness then I will add the liner secure it and finally make the holes within the liner.

I think I understand, so by having drainage spread out the ridges suck in air more vertically which is more efficient. Another factor is the drainage is faster which means the roots are less submerged which is good since too long submersion of roots is stressfull for plants. Or maybe the ventilation is simply better because the faster drainage means stronger air suction?