Need some advice.
This is first indoor grow that I’m “Serious” about. Grew indoors last winter but didn’t pay much attention to plants and it showed.
Trying to determine if this is a Calcium deficiency or something else.
Purple Kush & Northern Lights Photos
15 gallon container
Happy Frog Soil
PH is right at 7
2 315 watt CMH running at 75 percent
Temperature 77 - 80 during day, 70 - 75 night
Humidity about 40 percent
Seeds were purchased here
Started these ladies in solo cups and repotted at 2 weeks.
Currently coming up on 5 weeks
Didn’t give any nutes until 2 weeks ago
Tablespoon of Roots Organic twice (one at beginning week 4 and one beginning week 5)
New leaves have yellow tips and older leaves have brown spots starting
From research I’m thinking Calcium deficiency.
Saw picture that also look like Boron deficiency but read that is pretty rare.
Thanks in advance for any advice.