Hate to tell you, but Mars was/is one of the worst offenders of mis representing their lights. (those are really old tech anyway..there are newer Mars)
If you take their stated watts and multiple by 50-60%, you will be close to actual..No nada about Kingled. You need to know the ACTUAL watts and the size of your room..For burples figure 45-55 watts per sq ft..for white lights like the Sammys..figure 40-50 watts per sq ft. (ACTUAL WATTS)
You need flowering nutes + a PK BOOSTER for fat buds..There is a ton of info on lights and basic flowering here and on Google..Plz read for yourself..
BURPLE is history and a waste of $$ unless it is the only way..If so..look into Meizhi LEDS..Better lights and better company that puts the real draw on a sticker on the light! Mars CS sux..Meizhi was top notch (I began with Meizhis).
Haven't looked in a long time, but Mars used to send you diodes to DIY replacement under warranty when the 5cent Epistars they use burn out..LMAO