Clean-looking tent man. I would like to make some suggestions to help out if I may. I would recommend getting your lights on temperature up higher your plants will grow a lot slower in those temp ranges. Look for mid 80's in veg and early flower. Cannabis plants love heat and humidity it is the buds that hate it. Also, I would recommend getting your lights closer to get as much PAR out of them onto the plants as possible that low wattage you can get real close. Get your hands on a PAR meter & a thermal temp gun to help read the plant tops and get the most potential out of your lights.
Also, a 15 degree difference between your lights on temps and lights off is very large at this stage & will cause a ton of stretch in your plants. Through veg & early flower, we want to control that stretch by keeping our temp changes between lights on and lights off no more than 9 degrees. Let's try and get that closer to within 8 to 9 degrees to your lights on temps and you will notice a much tighter plant form in front of your eyes. The only time you want that gap over 10 degrees is later down the road in flower once the plants have finished growing vertically after weeks 4 to 6 depending on the strain. Then instead of the plants stretching it will send extra energy into the budding process and resin production.
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@@guru60304, I Just noticed you have purple stems. Purple stems can come from nitrogen or potassium deficiencies or lockouts.
If your noticing growth that is good sign. Hopefully you start getting some nice darker colors on the leaves.
@Pidrog, Added a second photo from today. After a few heavy waters to flush the soil the plant is looking stronger. The leaves I was having trouble with have slowed in the dying process. New leaves that are sprouting don't have the small brown tips anymore. Thanks for the help.