Not sure how much Poly-Guard® to use? Simply fill in the information below and we’ll do calculate the proper Poly Guard dosage. You will need your water test results to accurately determine your dosage; if you haven’t had your water tested yet, fill out this form and send us a sample of your water to test. If you get confused along the way, click on “How do I find this out?” Each one will have directions to ease any confusion. If you’re still having trouble, give us a call and we would be glad to help!