Thats how many to use then
but dont chase it, take a break inbetween.... they're much more effective when you let your oxygen levels come back to normal.
So now you can appreciate why I only do it when I trip... you're nicely out there, almost understanding and you take you're hit... a 30 second rush where audibles and visuals mix and you find you can orchestrate everything, loop the visuals and audibles and mix them around having fun for what feels like ages - almost as if you can loop time, and then you come back 2 minutes later, but your original trip is so much clearer and effective.... its the rush that I get, the giggles afterwards... thats "Hippy Crack" for me.