Always connect everything the way it should be connected.
For extra safety you can use a lumatek, it gives up 30% more light.
A regular ballast gives heat, but lumatek reduces the heat and changes it to more light. More light we like!
Other safe tips:
Carbon filter (20% more cuubs then your space is)
Never ever tell anyone, not even your closest friends, cuz they can turn their back at you for the slightest reasons.
Of course some of my friends know I'm cultivating the green, we exchance cuttings, seeds etc... But they are in the same position as I am. Even so, you still need to be careful. They can turn you in out of jealousy or whatever.
So don't tell anyone!
And If you shows pictures online, always show less then you have.
if you have ten plants outside, only show one!
Have a helicopter sweeping by your region every now and then?
Chance is fat it has a heatsensor. Use anti detection foil ! Read up on how to install it properly. So the heat sensors can't see your light and heat escaping your growspace.
LINKS TO BOOKS DONT HELP! THEY HELP A LITTLE BIT BUT PEOPLE ONLINE TALK OUT OF OWN EXPERIENCE! SO WHEN A BOOK IS WRITTEN YEARS AGO, EXPERIENCE HAS STRIVED IT BY YEARS AFTER!
Dont take my advice, don't take his advice, take experience as advice
People that advice books know shit themselfs; they only talk after what's written, never what's experienced