Scotty, I posted this question in another WF Journal, but figured, why not go straight to the source that inspired me so much..............
"Got some questions as a 1st time scrogger with single WF:
I'm growing a Tangerine Dream, a Sativa Dom, that purportedly stretches 3x-plus when shifted into flower (untrained)....I have approx 49" of headroom above my screen to top of cab max, minus depth of light fixture & hangers which leaves more like 39"
I need about 15" to 17" clearance from my light (600 watts), so that leaves me with 20" to 24" of real headroom.
Every grow I've followed on this strain shows multiple tall colas and a lot of "Out Of Control" comments about her stretch.
Any suggestions as to what % of my screen should be filled before the flip with a reported stretch like that?
My head says 75 to 80% fill before flip and, in truth, I really don't know.......
I topped her before transplanting to Waterfarm as well as super cropped when she took off...now at approx 40% fill of a 2-1/2' x 3-1/2' scrog screen.
Would definitely like to hear some "experienced" suggestions."
And one more question on Air supply feed rates...........
I'm running a GH Dual Diaphragm air pump (24/7), connected to two separate WF's, each with air stones & drip feeds.
I noticed when I had my air valves wide open feeding the WF's drip ring that the TD exhibited a seeming leaf & top growth fragility almost on the verge of what I would call over watered. Very easy to damage the plant when pulling back through.
Seeing this, I experimented and throttled back the air to the drip rings & think/imagine I am experiencing a more robust leaf structure & less fragility on the TD. All other conditions remain as usual.
Now all of what I experienced could be just the state of growth the plant was in......
But continuing................
I am still drip feeding at a good clip, but not at an almost constant stream from the drip ring holes as before.
Growth rate appears to remain unchanged. In fact growth rate is definitely impressing me, from a severely topped transplant to 40% fill of my screen in 3 weeks. Can't thank you enough..............
So Scotty, do you have any input on how much air delivery is OK, and if there is a possibility of over doing it?
PS: I've been known to imagine things before............