Hello, been searching and searching on this topic everywhere and would like more opinions on this. I’m debating if I should run 1.5” or 2” plumbing. Taking into consideration efficiency and any possible future equipment changes. Will be running underground and pouring a concrete slab so trying to decide before pouring. Pump/filter will be about 15-20 ft away. (1.5hp pump 100sq ft cartridge filter and a 12x24x54 agp. ) What do you guys suggest? Does it even really matter on this small setup? Thanks!