My idea to filter 450g monster tank is as follows, will it work?

drains from overflow into filter a, b, c, c, d and returns via pump to spray bar at opposite end of tank from the overflow.
Filers: (aquaflow pond filters)

D. is a empty tank to contain pump and to give extra surface area in case of power out. will properly use a second filter C but empty sat in reverse....
A couple of questions:
1. Will it work???
2. Will i need a intensection in the drain pipe, leading up to air. to silence it?
3. if i sit tank D. at the same level as filter C. can i have the inlet at same height as outlet from C.
4. What GPH should i be looking for in a pump for 450g? any recommendations???

drains from overflow into filter a, b, c, c, d and returns via pump to spray bar at opposite end of tank from the overflow.
Filers: (aquaflow pond filters)

D. is a empty tank to contain pump and to give extra surface area in case of power out. will properly use a second filter C but empty sat in reverse....
A couple of questions:
1. Will it work???
2. Will i need a intensection in the drain pipe, leading up to air. to silence it?
3. if i sit tank D. at the same level as filter C. can i have the inlet at same height as outlet from C.
4. What GPH should i be looking for in a pump for 450g? any recommendations???
