Awesome! Thank you so much for the help!! Really appreciate it.Im pretty sure if I look at the ZeoStart bottle it says "2mL per 250 gallons daily" which means that 1mL is perfect for a tank our size. I think its one of the things I like the most about the tank and Zeo - everything is in simple whole units Ive always stuck to 1mL / day for ZeoStart. I think the guide also says that if you see a lot of extra growth, to cut dosing back to once every other day until things clear up, then you can ramp back up. Im not sure if you can underdose, because the bacteria are feeding off of the nutrients in your tank as well - the zeostart just help supplement that. Ive never had an issue cutting back, but I always end up back at 1mL/day.