Yes I have heard of both of those FH food. I like the chingmix, seems to be the one more people are using for kok growth. I have a heater in there, its not in the pix but its there. Thanks.silvergrayhair;1574317; said:if its available there (i think its available online), try to get hold of chingmix headbooster SP80. you may also use humpy head and grand sumo red. i suggest you occasionally give him prawns - in bitesize chunks to help in the coloration and the kok. a heater may also help
good luck!