Not sure what yer asking but if you're trying to determine how much salt to use in your ferments. Well there are a number of factors. The amount of mash. Mine are half gallon jars so I use anywhere from 1000 to 1400 grams. I also use Probiotic capsules to help start fermentation. And I use white zin for my brine instead of water. This combination even with frozen pods I use 30 grams of salt. But if your going the simple route just water and salt no starter. I believe SmokenFire uses 40/45 grams of salt per 1000 grams of mash.
If you're getting white growth on top of your ferments it's most likely Kahm yeast which is harmless just scrape off when your ferments are finished. I also hold my mash down with cabbage leaf this help speed up natural fermentation. If you'd like more information about my method just pm me ill send you my whole process step by step.