Thanks for the feedback. I'm NOT happy to say 'glad my pond isn't the only pond doing this'. I know that a bad smell comes with a 'turn over'. My pond hasn't had a bad smell at all. It is only 100 yrds from my house and I am always doing something around it. Does anyone know if the algae bloom will affect the spawn? Mid April-mid May is usually the time the spawn happens at my place.