Red Eared Sliders Eating Romaine Lettuce

My 2 Rio Grandes eating some Romaine........

[@supremeshrek8096]

Won't romaine lettuce kill them???

[@jjammz]

Dean Boy 11
I only give them once in a while. They mostly eat dry food from Petco and dubia roaches. Also dandelion leaves, carrots, blueberries, ect....
I've had them now going on like over 4 years.

[@supremeshrek8096]

Oh okay i just need more info on turtles thanks