Run a few dwcs and always found nutrient is way to strong to be accepted when starting with youngs or stressed plants I always start with beneficials vita biopac I swear by and run either canna rhyzotonic,vita plant start or even formulex for first to weeks to provide whats needed establishing a...
I wud run em at night get an acoustic fan with good volume extraction change fans to 6" choppa shouldn't b a prob with 1 light lol as long as ur exchanging warm air bringing in fresh at same volume u prob find temps will level out perfect.