Feeding

[e46er]

hey im new to SW jsut added first 2 clowns 10 days ago heres some stats
as of 30 min ago
ph 8.1
ammonia 0
SG 1.025
nitrite 0
nitrate 5 or so, how high can this get when jsut a FOWLR and also a reef? 10 ppm or so and i should be doing a WC?
ca 420
kh 80 ppm
120G
40 G sump
euroreef 135rs
coralife 4x65W PC fixture as backup
coralife 2x150w MH with 2-96 W actinics
120-150 lb rocks
135lb sand
CL
quiet 1 4000HH return

not sure what id like to keep as far as corals go but im hoping with the 2 fixtures i should be pretty much ok with almost anything
as far as fish go so far ive got 2 brittle stars 20 assorted snails and 2 clowns
id like a dwarf flame angel, hopefully a blue spotted jawfish a blue hippo tang and thats all ive decided so far but i was jsut wondering as far as feeding goes how many different foods and of what, do you feed your livestock? in my planted tank i just cycle thru a couple different flake foods and occasional frozen mysis or brine shrimp.