Never used the hydro liver, but used hydro active wheat, hydro shrimp and the ocean+. I've used them for rolling baits and also coating the baits when fishing. I normally put a kilo or two in a bucket, a cap full of hydro and some warm water.
I've liked all my stuff from aa baits and have confidence in them. I will be trying the hydro liver soon when I go back to my lt94 bait π