Good idea to start the strobing from the earth chakra and ride the pulses up through each chakra in turn. Safest way to the goal starts from the base and moves up one chakra at a time in sequence. Though, it is neat to have anything strobe at first. Just that too much time spent in the void chakras 'can be" ungrounding and cause alot of "spacyness'. Just a suggestion anyway. in my experience strobes and pulses mean that chakra is full and "happy', you might say.