Will i kill my filters ?

Hi . Set up my eheim 2217 last night. I have been running a fluval 303 for about 3 months. Both are running at moment. Tank is around 300 litres. When the guy i bought it of made the tank he only drilled three holes in. So the two incoming spray bars are wedged through the same hole. Whereas two suck out points are at either end. with the two spray bar hoses comr through the same hole in the middle. I have the eheim on a big spray bar and the 303 on a small spray bar about 5 inches. so the flow are restricted a bit . will this damage the filters.

not really, the 303 has plenty of push so it will just force the water through at a higher preassure, if you are really worried drill some extra holes with a 3-4mm drill bit to relieve the preassure.

Thanks Illusn, Always there for me.