Breeding cricket question??

[Dutchy88]

So it's come to the point I'm sick of constantly buying crickets so I'm gunna have a crack at breeding some I've done my research doesn't seem that hard one question no care sheets,you tube vid see to answer is how long do you leave the breeder box (the little tub of dirt they lay eggs in) in there tank before taking it out? Anything else that you know about breeding crickets that isn't in care sheets on the net or anything from your own experience feel free to comment also..