bark size affecting PWT and drainage
There have been suggestions that, to eliminate a PWT and maximize drainage and aeration, the particle size for the ingredients making up the gritty mix should be (1) uniform and (2) no smaller than 1/8", (Turface is often screened to 1/16" to maximize its use.) Has anyone successfully dealt with bark that is too large?
I have lots (and lots) of excess fir bark: it's larger than 1/4" and smaller than 1/2". Thanks to info in an earlier post, I have located and ordered a 3/8" sieve. Somewhere I read that, in certain conditions, the range for bark could be expanded to 1/8"-3/8". Is this range appropriate for fir bark in the gritty mix?
Even if it is, I'll still have much fir bark greater than 3/8". Are there any adjustments I can make, either to the particle size of the Turface and grit or to the ratio of the three ingredients, and still have a low or non-existent PWT and effective (very good) drainage and aeration?