i just got my RES 2 days a go and one of them will eat and the other will barly toch it dose it matter if u give it to them in the watter or on land i give it to them on land
tinkerbell_pg with 2 RES, 4 cats,2 dogs,6 fish,2hermit crabs
Your turtles are probably adjusting to their new environment which could take several days but keep offering them food. They als need the water to eat.
Like flutterby said, they have to be fed in water - or else close to water so they can grab their food and drag it into the water. Turtles can't swallow except in water so they will starve if they can't eat their food while they are in the water.