Bought the TF-100 test kit and seems like the chlorine FAS/DPD powder is going very quickly. No way I will get approx 75 tests from the amount that came with the kit. Directions state heaping scoop but I have been dialing back since I am doing a SLAM right now. Should I use smaller scoops? Just can't see this lasting much longer at this rate of 3-4 tests daily.