i use sporeworks.com golden teachers. Simple strain but still potent and hearty. I use anywhere from 2-3 ml of syringe for each jar. Just squirt it in through the top of the jar and put a wort bandaid over the hole. Then shake to mix. i feel as though the grain easily prevents over saturation because its very absorbent. So 3 ml isnt bad. I also get alot of growth fast. I find it allows many more areas of growth to develop. My jars finish from start in about 10-14 days. I used to make liquid mycelium cultures using honey and water. I would add 2 ml of spore liquid into a pressure cooked mix of water and honey after it cooled. After about 2 days you can see mycelium floating and growing in the fluid. After about a week you should have a very white and stringy growth going. You can store this liquid in you frig for about 6 months. What this does is it gives you the ability to make as many syringes from the liquid culture mycelium. Its like using a spore syringe but a 1000 times better. With using 2 ml of spores to make a culture you can theoretically make hundred of hundred of syringes without spending any more then 2ml of spores costs. Get what i mean man