Main things I learned on my first grow...
1. Summers here in so cal can get hot. For about 2 weeks, Temps in the flower tent were between 88-92F. Plants didn't show signs of heat stress at all but I'm wondering if that hurt my final yield. Gotta control the temp in my tents...
2. Whether in 1 or 3 gallon smart pots, when using coco coir (depending on temps) , you need to water at least every other day, period.
3. Too much internode spacing. I'm thinking either too big of a variance in night /day Temps or I had lighting distance from canopy too far during first 2 weeks of flower. Had em at 24"not knowing how strong or weak the Mars Hydro II 1600 was. Learned tht at 12-14",optimal...
4. Have a cheap spare ph and ec meter on hand...
5. A 4" carbon filter and exhaust fan won't cut it with 4-6 plants in a 4x4grow tent. Smell escapes... I'm upgrading to a 6"...