I have ordered a roller mat knowing that i may need to modify my sump a bit. Please give me your thoughts on which type of installation you would chose. The sump is a 3 chamber trigger crystal 36. I cannot remove and replace the sump with another type of sump due to the front bracing of the stand although I'm sure I could take it out but I'd be nervous as the tank is 125 gallons. Also, the way the stand was constructed (bought second hand) this size sump was my best option. The roller mat is a Bubble Magus Filter Roller - Medium. Thanks