It is hard for me to suck water through my water bottle, is this normal?

NEW: The good news is it is easy now! Because of how the pleat pack is designed - it allows for three times the flow rate than the old one.

OLD: Because the Puritii filter is such a high power filter, it is normal to have to use some sucking power to get water up through the bottle. However, if it seems unusually hard to get water through, please don't hesitate to contact our support team at 1-855-462-7449 between 8:00am-6:00pm MST.