I’m not sure I’ve ever seen an experiment where using GA3 was actually successful. Seems like if it’s high enough ppm to help crack the seed - if it helps at all, which I’m not sure is proven - it’s high enough to make the seedling kill itself a week later. Even 50 ppm seems to be too much. Someone else tried it recently too, if I’m remembering right, and concluded that it wasn’t really helping… completely drawing a blank on who, though. Dunno, maybe if you can get the ppm down even lower, try a batch with 5, 10, and 25? For seeds that will crack without help, though, just LITFA and let nature do its thing. I can’t get through one day without screwing up at least a dozen times, and nature’s managed to get through millions of years with nothing more disastrous than the duck-billed platypus popping up… 
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