Uncle Ben,
Excuse the ignorance if I have overlooked this (or call me a dick for it, either way, its ALL TRUE), I've seen posts on your soil mix (i.e. substrate comp.) and have had a look at:
http://forums2.gardenweb.com/discussions/1375349/container-soils-water-movement-and-retention-xviii
(i think i picked that link up in some of the posts somewhere)
From memory I think you had about a 25/25% vermiculite/perlite 'soil-ammendment' (hahahah, getting technical) + other elements, and have read many times you do not use coir or coco peat, but this is not necessarily a direct coco peat question.
Now, reading the post: "If you start with a water-retentive medium, you cannot effectively amend it to improve aeration or drainage characteristics by adding larger particulates. Sand, perlite, Turface, calcined DE ...... none of them will work effectively." & "You cannot add coarse material to fine material and improve drainage or the ht of the PWT."
I am not questioning your soil mix, it is just that currently I am still working with coco peat, and have recently done a perlite mix with it (~40% perlite, 60% coco peat perhaps bordering on 50/50%) and would like either some clarification or advice as to my next step (i am still stuck with coco peat for a bit....long story)
So, it seems from the quoted comments this idea of adding perlite to the coco peat "All perlite does in heavy soils is occupy space that would otherwise be full of water. Perlite simply reduces the amount of water a soil is capable of holding because it is not internally porous. IOW - all it does is take up space."
I am assuming that because of fine nature of coco peat, this also applies? Or does it not? I.e. The coco peat is more porous enough compared to heavy soil mixes?
Thus far, watering my new mix (i.e. 40/60) compared to the previous 100% coco peat pots (yes, rapturous laughter from the crowd, take a bow) more frequently and half the previous volume of watering when using 100% coco peat - so, if I am following things here; the new 40/60 mix now holds less water, hence less volume required for drainage, and frequency of watering to prevent drying increases - please pull me up if I am going way of track here.
Reading his post further then shows that he introduces pine bark something somethings (i.e. : a coarser base material compared to the finer coco peat base)
Small batch:
3 gallons pine bark fines
1/2 gallon peat
1/2 gallon perlite
4 tbsp lime (or gypsum in some cases)
1/4 cup CRF (if preferred)
Instead of chemical root prooning, I've inadvertently ended up in 'air prooning' territory via use of perforated inserts and 'substrate bag' - all a bit excessive I know but you use whats available, but at the time I started this I just felt I needed to get better aeration of the coco peat because 100% coco peat in ~3-3.5 gallon pots (hahahaha, gallons, to the converter everytime - to me, ~11-13L) just seemed to stay 'soaked' forever and felt it was slowing down plant growth, and initially I thought that this 'water-logging' for a prolonged period would slow down the root growth - looking at the root ball after harvest showed that virtually a lot of the coco peat remained un-innervated and occurred mainly around the pot edge. So i ended up with that insert and bag and think ive kinda stumbled upon air prooning in the process - the root balls looked like the uploaded picture (which is not mine).
Currently thinking of getting a few of these rocket pots
http://www.rocketpot.com.au/index.html
They recommend to 'use a lower porosity medium' in these pots.
So after a lengthy load of backstory, I would just like some advice on:
1. If I was to fill these pots, I am assuming that coco peat could be considered a lower porosity medium, would it be beneficial or not to further ammend the coco peat with perlite, or vermiculite, or in your case, a 25% mix of each (and what about grades? Super Coarse, Coarse, fine? - I see people sprouting super coarse everywhere as ammendment for the coco peat, but then reading Gardenweb discussion, this might not be a good idea?)
or
2. Just leave it 100% coco peat, don't bother ammending any further (i.e. taking into account the comments from the Gardenweb post and the recommendation from RocketPot)
or
3. Any suggestions you have at this point, I like the idea of air prooning and am kinda excited about pots that look like they came out of Super Mario, and prefer it over chemical root prooning (and that is not because of the 'chemical' - i am not an 'organic fanboy' - its more a matter of convenience and the fact that I am the laziest fuck on the planet - contenders beware, I won't even initiate a competition to prove the point, thats HOW LAZY)
And, if we were to take the 'coarser' mix as described on Gardenweb post, would such a coarse mixture be considered 'a higher porosity medium' maybe not suitable for this RocketPot design?
Again, I know its a lenghty post, and apologise ahead of time for stating or asking the obvious, just trying to show I havn't been a total lazy dick about this so far....the story crawls on....
Thanks UB and other contributors to these threads of glory!
As for the Poozers....well.....
"Me, Me, Me, Me, Meeeeeeeeeeeeeeeeee~~"