🌬️Beyond VPD & Into The SPAC, with Nik from Rooted Leaf
GrowCast
GrowCast Podcast
4.7 • 599 Ratings
🗓️ 28 April 2025
⏱️ 58 minutes
🧾️ Download transcript
Summary
Nik from Rooted Leaf Nutrients (use code GROWCAST) returns for another deep dive- this time moving away from soil fertilizer elements and delving into watering dynamics. Nik introduces us a concept called SPAC, or soil, plant, air, continuum (AKA the soil, plant, atmosphere continuum). This concept encompasses a more holistic view when it comes to optimal climate conditions in our cannabis grows- whereas singular metrics like VPD can sometimes be only part of the picture. Nik discusses how we should be thinking about what happens to all that water that we dump into the soil system after we put it in there... Plants, after all, are just water lifting mechanisms designed to move that water from the soil into the atmosphere. Understanding and mastering this cycle leads to a healthier, and more vigorous garden.
Air & Water Pressure Differences 29:41
Biological Changes in Water Consumption 33:15
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Transcript
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| 0:00.0 | Greetings growers worldwide. Jordan River here back with more Growcast, Live Long and Prosper. |
| 0:06.6 | Today we have Nick from Rooted Leaf back on the line. That's right. Nick was at Colt Cup. He was speaking up there. |
| 0:12.1 | Of course, rootedleaf.com code Growcast for my favorite nutrients around. And today's episode is a very interesting one. |
| 0:18.5 | We're stepping away from soil fertilizer elements and instead |
| 0:22.2 | going a little bit deeper into some climate science. This is a very cool episode where Nick introduces |
| 0:27.9 | a whole new concept. I know you're going to love it. But before we jump into it, shout out to AC Infinity. |
| 0:34.0 | That's right, acinfinity.com, code Growcast 15, or go to Amazon and use Growcast |
| 0:39.6 | 10. Now, you can get everything you need up at ACinfinity.com. They have whole grow tent kits, |
| 0:45.7 | just one click, ready to go. You need a new two by two. You need a new propagation kit. |
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| 0:54.1 | affordable board style lights. They've got their heavy duty super super powerful bar |
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| 1:04.9 | you need it's up there it's acinfinity dot com use code growcast 15 on the website and if you |
| 1:10.1 | order from amazon use code growcast one zero the website. And if you order from Amazon, use code Growcast 10 on Amazon and that I'll get you |
| 1:14.2 | a lesser savings on everything in your cart. |
| 1:16.8 | That's AC Infinity. |
| 1:18.2 | So they've been a supporter for a long time. |
| 1:20.5 | We love AC Infinity. |
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| 1:22.8 | Growcast 15 is the code on the website and Growcast 10 on Amazon. That's ACInfinity.com code |
| 1:30.1 | Growcast 15. Thank you to AC Infinity. All right, let's get into it with Nick. Thanks for |
| 1:36.4 | listening and enjoy the show. Hello podcast listeners. You are now listening to Growcast. I'm your host, |
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