Recently my male abf has been spending most of his time in the water, when it has been the opposite up until now. He's also a lighter green.

He's still eating earthworms and dubia roaches and is active. Day temps are 78° and night temps are 73° with 60% humidity. The water temp is 75°. Nothing has changed except i put him in the water last week and he hasn't left really. Any idea if there's a problem?