Nah… nothin that crazy… splitting the drains even 1 time into 2 per sock makes a big difference. I run 6 that way off 3 drains on my 500 gal. The socks are only 7”x16” and i change them 1-2 times a year. The 7”x30” even on a single drain will run for a long time IMO. I have 2 of those on a 230gal and same thing i can go up to a year and they still wont overflow. More so change them for my “yearly” sump cleaning.I am beginning to think you would need in the order of twenty socks for any reasonable rate of flow.