phos reactor please help- put it together

[nathenvan]

I am trying to put together a phosphate reactor by kent. My brother in law gave this to me without instruction what so ever. so please help me put it together cause I do not know how and do not want to flood my floor.

here what I want to know

2 sponges ( where to they go) inside or outside or the black plastic?.

which one is the exit tube.

and how much phosphat should i put in there. thank you