Hey Flame,
Rotten egg smell. That's sulfur I guess in your water? Toxic fumes and gases can kill fish quick. If it were me I would stay at the 30 minute mark for a while yet. Flame do you have a well feeding your pond? Or is it all natural run off?
Only reason I ask is I remember as a kid growing up we had a well for the house and a lot of times it smelled like rotten eggs. My dad always told me we had a lot hydrogen sulfide in the well It never really hurt us... but it sure did stink.. We eventually got a filter. If you only have 3 inches of muck on your pond bottom I have a hard time believing its trapped in it but it could be... I would play it safe and run it for 30 mins for one more week. Then bump it up to an hour and stay there for a while.
Last edited by RC51; 06/15/17 07:37 AM.
