Let's face it, no grow goes 100% smoothly.
Show pics of those plants you're not very proud of, what method you are using to grow them, what happened and what you are doing to correct the issue.
I'll go first -
Chiltepin
Method: Indoor Kratky
Problem: Too much water when refilling nutrient solution. Massive leaf drop.
Solution: Measuring nutrient solution when refilling container.
Trinidad Scorpion
Method: Indoor DWC
Problem: LED Lights too close (HLG100). Leaf burn.
Solution: Moved under T5 lights
Show pics of those plants you're not very proud of, what method you are using to grow them, what happened and what you are doing to correct the issue.
I'll go first -
Chiltepin
Method: Indoor Kratky
Problem: Too much water when refilling nutrient solution. Massive leaf drop.
Solution: Measuring nutrient solution when refilling container.
Trinidad Scorpion
Method: Indoor DWC
Problem: LED Lights too close (HLG100). Leaf burn.
Solution: Moved under T5 lights