Flat Worm Exit dose size help

[bluesox68]

I plan to dose tomorrow and I have my water and carbon ready, I have a 40 gallon display and a 20 gallon sump/fuge with about 75 lbs of lr so my guess would be about 40 gallons of water valume? My question is if I have that right how many drops do I use? I can't find the instructions! Help and advice and tips are welcome wish me luck I'm very nervous