Currently running 90 Gallon sump on my 300 Gallon and looking to add filtration. Can i add and additional sump or should i just add a FX5 i have a new 40 gallon sump that i can use but don't know if it is possible to hook up two sumps on one tank any ideas for this type of set up. Problem with adding the FX5 is that my arcylic tank has a 6 inch lip so how can i attach the FX5. I have corner overflows to the 90- gallon.