WHen using the chemical tip, it doesn't seem to be drawing properly. I bought this rig from my father-in-law (no expert by any means), and he said to mix 4 gallons o bleach with one water. The chemicals were not doing much, and I ended up using a backpack pump sprayer on most of his house. When using the black tip, does this draw ONLY from the chemical tank? Everything seems to be connected fine and no blockages. I took the piece off from the pump (with the ball and spring inside) and everything looked right to me. The ball is supposed to be on top of the spring, right? If someone can point me in the right direction to troubleshoot this thing,I would greatly appreciate it. Thanks in advance.
Also, 2500 sq ft in an hour and a half, wow! How do you measure the amount of living space?