Wasn't sure what to title this post.
Thought this maybe useful information for some of you.
I loaded up my watering shelf last night with 12 new 1020 flats w/ (18 ) 4" pots each. The pots are filled with 50/50 peat and perlite.
I'm not sure where the measuring line is on a 33 gallon garbage can, but I started with water up at the top. After the absorption the can was about half full.
I bought two blocks of Coir just to check it out. Wow! Cool stuff.
After pouring about 15 gallons into a block, like you see in the photo, It filled a contractor size wheelbarrow. It was like the expanding foam you get in a can. The more water I threw at it, the bigger in volume.
I'm convinced no more peat. Know what do I use instead of perlite.