I run my entire room thru a surge protector. I got a good contractor grade surge protector from Home Depot. I have been doing this for almost 5 years and have never regretted it. Peace of mind .
You don't need to feed nutes until you get some strong roots . Your rockwool looks waterlogged . Just water once a day with PH'd water . Make sure to have good drainage . Rockwool need to drain and dry to draw in Oxygen .
as a truck driver , I have to tell you that a refer trailer has a 50 gallon fuel tank that runs on diesel fuel . You will have to refill it every two days. Diesel fuel costs $2.80 a gallon right now and can/will go up.
Major cost.