So it’s our third grow, and we popped a Gorilla Glue, a Girl Scout Cookies Extreme (both photos), and three autos: FastBuds’ Strawberry Pie (2) and Grapefruit. The idea is to keep the photos in our custom 3x2 tent and put the autos outside in bags after a hardening-off period.
After a disappointing yield from our previous effort, we got great advice from @dbrn32, @KeystoneCops, @Not2SureYet and others who suggested upgrading our dinky light to a new HLG 260 XL. After assembling and hanging the kit, we couldn’t believe its brightness.
The problem: although it comes with a dimmer, I mistakenly left the light on full power for the first couple of days of our young seedlings’ lives. Light is hung 23" inches above them, and the edges of the cotyledons’ leaves on the GSC Extreme appear to have gotten burned, possibly when a little water got on them, which I know can magnify the heat in bad ways. (We also had fungus gnats, so I followed @Hellraiser’s advice of diatomaceous earth and mosquito bits - visible in photo - and haven’t had a problem since.)
Question: Will our little Girl Scout with her toasted cotyledons be okay? I’m hoping a long veg period will help her muscle through this early blunder. Thoughts?
I looked up ideal PPFD ranges for seedlings and found 200-300 being optimal. At full blast and at the same height, the new light was giving them around 700, so I turned it down less than halfway (the dimmer actually has 11 settings, and it’s currently on 4 - but I LOVE the fact that, like Nigel Tufnel’s amp, this one goes to 11!).
Another question: At the current output setting, most of the plants are receiving about 250, but Gorilla Glue is getting about 350. Is this still too high? If I turn the light down to 3, some of the readings go below 200, and I thought it would be best to be a little over than a lot under. Thoughts?
Also, we planted the taproots directly in their Happy Frog “forever” homes: 7-gallon bags for the photos, 5-gallon bags for the autos. Will this affect yield, or should we go for seedlings in Solo cups and then transplant for next time?
Thanks to all the usual (and unusual) suspects who have helped us along so nicely in the past with encouragement, advice, and kind words.