Growing sativa indoors DWC

My first Durban Poison sativa seed popped today. Anything special I have to watch because its sativa?
Room temp runs 68 to 75 over 24 hours. Humidity 45%
Good airflow

pH 5.75 floating , I top up with 5.75 pH water when its a gallon low. PPM is round 440 yup its hard water
5 gallon bucket 6 inch net pot and bubbler

Once 5 sets of leaves it will get LED HLG with the spectrum below and PAR values




Munchies 50% of this

You need more humidity for young plants and seedlings. Doesn't even matter if sativa or indica.