I have a couple of questions for the seasoned pros over here. Thanks for all the info amassed thus far! I could not have wrapped my head around this and gotten this far to go ahead without the essay of information and everyone's contributions. I am pretty much ready to pull the trigger and buy everything I need. I just want to get a confirmation to a couple design ideas and overall plan from some people who have been in a similar mindset and applications. I have a limited budget for the planned upgrades, and a couple ideas where to spend it, and even more upgrade possibilities then I like to admit. However.. here is what we can/will work with.
For starters, the garden to be watered will be situated on a 4x8 ebb and flo table. Currently lit with 3x600w cooltube fixtures. An upgrade idea here would be to add a 3x3 table beside the 4x8, and buy two light rails, two trolleys, two push-bars, and 3 parabolic 4' fixtures with mogul extensions to travel across the room and back. (around summer time a scale down would probably be in order)
Anyways.. imagining ~60plants on the 4x8.. They will be planted into coco with an undetermined amount of perlite added. My understanding is that 30% seems to give greater results with a moister setting on the sensors (closer to DTW or small runoff), than straight coco with the same moisture settings. Pot size for the 60 plants is between [2ltr 5.5" square pots] or [1 or 2 gallon smartpot/root pouch]. Talk is in the air of canopy management stress and labor, so maybe 40 on the 4x8 with [2 or 3 gallon smartpot/rootpouch]
You can add a better amendment than perlite to your media. Calcined Clays are a superior alternative in so many ways. It costs more, but the benefits make it a must-have in my garden.
Want an all natural organic water crystal, that can also release nutrients if pre-charged with them? Thats calcined clays for you.
You never want to approach any type of run-off with blumats. Go towards the drier side and you'll have much more white fuzzy roots. Get the medium too wet with blumats, and you can pretty much guarantee you'll wipe out your roothairs very quickly as there is no dry down period with blumats.
I often times would tweak the knobs to let more water through my blumats, now lately Im finding Im tightening the knob just a little each day until I get the media to the moisture level I want. Im losing far fewer lower leaves to abscission and yellowing now that Im leaning towards the drier side. Roots are fuzzier and whiter too.
For clarification, the fabric root pruning pots are leagues above traditional pots in terms of root manipulation/pruning help with the constant root level moisture controlled by sensors vs. wet/dry cycles in a traditional closed wall structured pot if I am not mistaken?
Fabric Pots are nice and all, and Ive used them both in my garden, but I prefer the plastic pots after much personal experience. You can still get a nice constant moisture levels with plastic containers. Wet/dry cycles occur from watering practices. It has nothing to do with the containers material. Although fabric bags will help you out allowing the media to dry faster if you over-water.
One downside of fabric bags is that I am unable to lift the rootball out of the container to inspect it. Its nice to be able to lift the rootball out and inspect root health and better gauge moisture levels in the media from top to bottom.
You'll still get good results with fabric bags though so they're by no means a bad choice. My Durban Poison-D is in a 3 gallon fabric bag and is doing excellent, but I still prefer good ole regular plastic pots.
Now the grow beds some of you other Blumat Users are using really intrigues me alot and Ive always wanted to do blumats + beds...
Now this is where my confusions/concerns/hesitations come in: reservoir/supply line sizing pressure requirements. There is a 40gal low-pro available under the table, to be plumbed to a top-up-timed 5gal bucket at 4.5' above the ground, with the pots/sensors 1.5-2' above the ground. I was leaning towards two 1/2" through-hills at the bottom of the bucket to connect a "U" shaped loop of 1/2" tube around the table back up to the res with petcocks to allow for disconnect when full of water and not draining the supply line. Can't forget the "T" in the middle of the loop for purging, going to petcock and plumb it back to 40gal. How many plants can this idea support when plumbed directly from 1/2"poly to the 3mm drip line.
Im sorry but I can't be of any help here. My Reservoir/setup is so simple and basic I feel like a hick compared to what some of you guys got going on just for reservoirs. Same 8mm and 3mm lines that were provided with the patio kit, and a lone shut off valve. Nothing more than that for my little setup. Ill post a pic at the end.
I hope someone else can be more helpful in that regard.
Off my 1/2" hydrostore poly tube, I was interested in the kentsystems quick connect couplings (QC). I believe this is the simplest and most flexible option with a lot of plants: tubing connections are as follows.
[1/2"polytube]-> [3mm shut-off female QC]x[3mm open-flow triggering male QC] ->[3mm drip line attached to sensor]. approx 3$ per QC coupling pair if I am not mistaken.
Otherwise, to save some dollars for another upgrade.... I imagine 3mm->3mm hose union barbs in the 1/2" and the barb caps as goof plugs instead of QCs. Cost is now ~50cents a pair. Is this groovy?
Anyways, I think that is is for now. I hope this is not too far off from a ready to go concept. I am pretty ansy to buy the parts and set it up to get some life back! If anyone here notices any thing flawed or to be improved, please do not hesitate to critique and insult, or praise. (doubtfull)
Oh how you will love getting so much more free time now. Every plant you put on a blumat, the more freedom you are gaining yourself. Experiment with some CRF + Blumats, and you'll have even more free time and even healthier plants.
Genes.
Ghetto
Fabulous