Your capsules are same dosage as Reef Flux, which has directions:
Turn off skimmer for 3 days
GFO is safe, but remove activated carbon
Empty 1 capsule for every 10 gallons (ex 10 capsules treat 100 gallons regardless of rock volume) into a glass, stir, then add to high flow area of sump
After 3 weeks, perform minimum 30% water change
Filter socks can be used during treatment
Dosage can be doubled for faster results
NOTE: I probably doubled dose and nearly lost my yellow tang. Everything else came thru. Yellow tang got to go 'vacation' in my 5 gallon fish QT which had been repurposed at the time for growing tang macroalgae snacks - probably was like a deluxe vacation for my yellow LOL