1 - Tank's level
2 - Discharge tube
3 - Connection to the filter
4 - Filter tanks
5 - Pre-filtration material BIO MAT
6 - Bio Balls INFINITE
7 - Threaded connector for tanks' assembling
8 - Nut
9 - O-Ring
10 - Water circulation pump's connector
11 - Skimmer (RW130/350)
12 - Union for water discharge
13 - Union for coming back water
14 - Coming back water
15 - Tube for coming back water
A2 - Water collection tank 2 holes INFINITE
A4 - Water collection tank 4 holes INFINITE
P - Circulation pump

*with reserve of technical improvements