Hi, my friend was kind enough to hook me up with a phosban reactor and about 1/2lb of pellets(unknown brand). Im not sure exactly how to install the phosban reactor. I have a maxi jet 900 pump I was going to use with it, the phosban reactor has a valve on it to adjust the speed. My questions are, do I use the mj to take water in from the overflow section in my sump to the phosban reactor and then install a hose to push out water into the return section? do I have to wash the pellets before use? How much do I use? How do I know what tumble looks like? Sorry if these questions are really noobie. thanks.