franky

I have found the bunnings premium coir garden soil to be of adequete pore size on par with hydroponic counterparts. on the flushing, potassium chloride is largely found in unflushed coco and can actually be of use in propagation of some plants eg tomatoes etc I am not experienced with cacti growth so I cannot comment on that as I'm a newbie to cacti still. one more thing if coco constitutes a majority of your mix and you are not using pre buffered hydroponic coco then I would reccoment adding calcium sulfate (gypsum) as coco is lacking, and I have read trichocereus like lots of calcium. I personally buffer the coco with my own cal/mag solution by soaking the coco in the solution of1.4ec but I'm using coco in an intense hydroponic setting

I have only found peat moss to be hydrophobic, coco peat absorbs water very well wet or dry and does not shrink

It greatly aids water retention, as an ammendmant no more than 30% imo is needed depending on genus you are growing and even species. For those bottom watering coco greatly aids the capillary action of a medium!

Transpiration is whatlets the plant uptake water through its roots! hi all I am new to this forum I will do an intro soon ;D