Soil materials thread

I typically see mixes with:

1/3 peat
1/3 drainage (perlite, pumice, lava)
1/3 compost, castings, amendments, etc

I was wondering if Fir Bark 1/4'' minus or 1/8'' minus can be used to replace a portion of the peat.

instead of 33% coco or peat, maybe:

10% firbark 1/4''minus
23% peat
+
1/3 drainage (perlite, pumice, lava)
1/3 compost, castings, amendments, etc

Does anyone have anything against fir bark? would it need to be aged, or nitro-lized? How is that done if so?

I hear fir bark breaks down slowly so I assume it would be a good base material, and its a little cheaper than coir/peat moss

Any feed back would be great, I might be able to show you an older analysis of it to get an idea of the numbers. I am still learning and asking a lot of questions, I would like to add to this website, please let me know if there is any way I can contribute I have been doing research on soil materials recently. So feel free to post questions here as well.

No real experience, but I've been slowly moving towards wood products after reading about 5-1-1, Ruth Strouts system, pine chips to replace perlite, etc. Everytime I break apart a rootball, any "foamy" wood bits are invaded with roots.

Besides a suggestion to precompost with a bit of nitrogen amendment I haven't got much to give. At least, that is what I would do. Cover and encourage fungi.

My understanding is that's it's a cheap filler in many commercial potting soils, as it's a byproduct of the lumber industry. I believe fir bark has some anti-microbial properties, is very slow to break down, and there was some other reason I can't remember off the top of my head why it wasn't ideal.