How many HOB's w/a canister in a 90 gal?

[swfishlover]

I'm in need of some advice please.

I am upgrading from a 46 bow front to a 90 long.

I'm trying to find out if I need an additional HOB or an upgrade to the one I'm currently using. What I'm using now is a Fluval 305 CF (cause I use a chiller), protein skimmer rated up to 100 gals, one Koralia 3 PH and I also use an AquaClear HOB 70. Would it be beneficial to add another AC 70 or upgrade to an AC 110 and get rid of the 70? I will also be getting 1-2 more of the Koralias. Thanks for your help.
2 percula clowns
1 yellow tang
1 hippo tang
1 yellow eyed tang
1 stars and stripes puffer
1 scooter blenney
1 domino damsel
1 blue damsel
1 yellowed tail damsel
CUC IS COMING

 

[eric b 125]

i think you'll be okay with the ac70 you have. i like running carbon in my tank. if you're upgrading, why dont you add a sump? i'd say the cuc should come asap. watch out for the tang police, they're going to jump all over this.