Is that your highest temps (mid 80s?) ? You may need to add more ventilation. I would keep your best 8 plants and give them room to grow....1K with some TLC will produce some monster plants....I grow 6 in a 4X4 area with a 600 watter and its a good fit.

Your roots cant be suspended in the air unless they are kept moist....dry roots die.

Good luck:thumbsup: