Recent content by Delps8

These settings use a conversion factor of 0.0175 which is extremely high. I use a dedicated flower light (LED) and it's not that high. Attached is a document I wrote to help growers convert lux to PPFD and no LED has a factor that high. A 3100° CMH (whatever that is) comes in a 0.0170...

Re. dimmer settings and hang height - right on the manufacturer's product page. As is common with manufacturers, their guidance is conservative but this is more conservative than Mars. Their guidance will tend to be conservative because their goal is for you to have an excellent crop rather that...

That's a great idea! And lots of seeds. I just checked my inventory. :-)

It's a Gorilla tent 2' x 4' and it's 56cm/22" between the poles. Thanks to your posting, I checked out the product description and it's a slightly different design than I had thought (an assumption being the mother of all F'ups). I thought they were using a setup similar to the Gorilla boards...

I think I posted this before but I'll try it again. These "boards" might have the same design flaw as the ones for a Gorilla tent. The issue is the width. Unless there's a gap between the poles that hold up the board and the poles in the corners of the tent, a grower cannot use anything that...

@Phytoplankton, as a young man, reading High Times in the local reservoir.

Day 19 of flower. By day 19 of flower, my plants would have been at 100% for a few weeks. I tried to find PPFD values for your light but wasn't able to find anything reliable. I used Google and then Chat. Chat came up with more info but, not unexpectedly, there were conflicting data. What...

How many days since sprout or flip?

Yeh, I get it. 30+ years in software, including three years of Apple, so I've been around for a lot of changes. Simple fact is that Americans are expensive. "You can have it good, you can have it soon, you can have it cheap—pick two."

What @solakani said. The leaf temperature offset will be a negative number because the leaf surface is cooled when water evaporates from the leaf during transpiration. There's a very thin layer on the leaf surface where the temperature is lower and that helps cool the plant. Strange that...

"RTFM" - :-) Sounds like someone who's worked in tech support.

What model light is that? Is it the Lumatek ATS200?

What's RH and air flow like? Have you done any other grows with this many plants in that tent?

Seedlings cannot take up nutrients until they sprout their first true leaves. The cotyledons provide nutrients because the root system is not mature enough to take up nutrients. By the time the first true leaves have sprouted, the root system has matured to the point where it can take up...

I responded to this thread a while back. I just skimmed that thread (page) so there's good info re. environment there. There's a graphic below that shows the 10 parameters of the grow environment. Are those conditions pretty much the same or have things changed? 1-1.5 gm is not what I...