One tablespoon is quite a lot of blue green algae…..ohhhhh boy! For 2 quarts I would start with 1/4th teaspoon only. That stuff comes alive when in water…..can become too strong to drink. The concentrate can be too much to drink too if its too strong. Start with a smaller does and find out what you like vs not like b4 you go stronger. I find it is an acquired taste and I prefer variety and did not want too much in my refrigerator to drink on b4 I made another liquid of vitality. Yes yo do need to dilute to and 2 quarts goes a long way diluted. Good luck learning.