Hi there,
what brand of FH food pellet is good for colloration and head Hunch Up,Coz I tried many brand and most of them dont have effect, please help me to find better food, and is it ok if I Partition my 35 gallons tank into two partition.....thanks a lot...

more than 90% depends on the genes of the fish itself..
food only help a bit...
DO NOT get those artifical colouring ehancer for your fish.
it will damage the organs in the long run..

yep!

you can try feeding your flowerhorn some fresh prawns/shrimps frmo the wet market!