First Grow Seedsman Northern Lights Auto

First week in the books. Gave non ph spring water via spray bottle when dry. Day 7 was first watering with RO water ph 6.5. Had slight stretching early on so lowered lights and increased light power via dimmer. Have some fungus gnats but doesn't seem too bad at this point - not many at all. Temps stay between 70-80F usually around 75-77F