Yes they look over watered to me (mine looked the same not to long ago).
Apart from the mold tip above I keep the fan on as I have a small oil radiator in my tent to keep the temp stable without the tower fan off the heat rises to the top and as the temp sensor from the plug is about mid way down the tent, the radiator could potentially stay on too long so it helps keep the air temp stable throughout tent (for me anyhow), I use LED though so you might not be supplementing heat like me to get the 23/25 range. I keep my fan on 24/7.