Gotcha. I was slightly above 2ppm at 2.4. Yesterday I just hit 2ppm with elevated Nitrites. I will prob hit it with another 2ppm per the instructions tomorrow. Then wait it out for a few days.I had and still have difficulty figuring out how much water I actually have. There's 40lbs of dry rock in my tank. I just guessed that I had 20 gal of water so dosed 80 drops. My ammonia was super high so I did a couple of water changes. I wasn't even keeping track. I just kept on doing water changes until the ammonia dropped to about 2ppm. If you notice in my pic, I have the temp set to 84 degrees. My salinity is also lower than normal. These are a couple of tricks when using Dr Tim's.
Accounting for rocks and substrate, I know I put in approx 25.6 gallons. So dosed 100 drops or 1 teaspoon.