Thank you for the confidence.
Let me provide some background. I run Drip Hydroponics (pH adjusted to 6.2 in veg), and my media is Sunshine Mix #4. I’ve found that introducing their feed from days 12 at 1.20 is best to avoid toxicities/deficiencies. However, a few of the OG hybrids that I have growing ahead of the Banana OG experienced severe deficiencies on day 15 of veg. Because of this, I decided to introduce nutrients to the Banana OGs on day 10, but at a lower e/c of 0.9, just in case they weren’t all ready for it.
5 days later, on day 15 (3/3/24), I noticed necrosis and chlorosis on Patsy’s lower leaves:
I decided to measure everyone’s E/C, here are the results:
- Kayla : 0.04 mS/cm
- Yaruska : 0.04 mS/cm
- That one Girl From Fast and Furious : 0.04 mS/cm
- Jimmy Cross : 0.005 mS/cm
- Patsy : 0.07 mS/cm
- Peggy : 0.07 mS/cm
- Bubby : 0.17 mS/cm
- Jane : 0.36 mS/cm
- Lady Godiva : 0.36 mS/cm
… and Lt. Dan wasn’t measured, because he was still too underdeveloped.
For reference, Sunshine Mix #4 had an e/c of 0.44 when the seeds were planted. So, I decided to switch them to full strength e/c, which is 2.01.
On March 6, I noticed Jane’s leaves were curling slightly upward. This is a symptom that I’ve previously experienced was caused by a nitrogen deficiency. So, I decided to measure her e/c.
Jimmy Cross developed necrosis on his lower fan leaves, and a bit on his upper.
And Patsy’s leaves began to curl a bit more.
Here’s a group pic on that day.
Here’s them yesterday
…and Lt. Dan:
I gave him a little trim on the sides, he was out of regs.
Looking at the plants, I decided to bump them up to the week 3 feed (Bumps the e/c up to 2.24, introduces more nitrogen). I want to avoid letting the plants get as bad as the hungriest plants in my other garden.
Here’s the hungriest one there, a Hell Raiser OG:
Anyway, here we are today: