Honestly the tallest plant has a giant white root ball. no rot on that one and still the same problem.Because of the environment and root mass. Kinda why i feel you need to adjust the waterings and just make sure your getting then good co2 rich air. In a week or ao you should be able to up it but i fond they generally grow into thier needs.
And i feel with the new LED tech way to many ppl are over lighting the plants to early. They will tolerate and utilize maximum light if they are getting everything they beed and are thriving. Short of that it will fanage tye plants and quickly