Depends what system you have if its a 300 GPD or max 450GPD then get the Aquatech 8800 booster pump, if you've got the 4040 them you gonna need a bigger booster pump the Clarke BPT600 1" that will do the job, wouldn't worry to
Much a booster will soon get ya tank filled up alot quicker and prolong the life of the pre filters and resin life should last a lil longer 👳👳👳🌲🌲🌲