amounts? no idea - depends on conditions, amount of fish in the water, nuisance roach, beam and tench (i just hate them) whether they are feeding or not, etc,etc,etc. just remember you can put it in, but its a tad more tricky to take out....
a mix of pigeon conditioner, a bit of hemp, crushed tigers, a bit of maize, pellet powder and some mived sizes of pellet should do it for a "loose" mix.