Hi all, first time posting.
I just got a new batch of Tilapia on Thursday (four days ago). I noticed a few of them didn't seem right, but I figured it was transport stress. They haven't been eating well, and I noticed some funny lesions on several of them, so today I turned off the bubblers and gave them a good inspection. To my horror I found that several had these awful white growths on them.
At first I suspected ich, but upon doing more research I think it might be Saprolegnia. I believe that the fish must have been injured in transport, and the fungus is attaching to the wounds.
I have removed about 10 fish into a 100 gallon hospital tank. I have exchanged the water several times today, and I have added about 7.5 lbs of salt in the 100 gallons of water. I plan to do a water exchange in the morning and then re-salt the hospital tank.
The other 30 fish seem unaffected, but I'm worried that they may develop it also.
Here are my specs:
Number of fish: about 40 3/4 lb tilapia
Tank size: 300 gallons (one of two fish tanks for 600 gallons altogether)
Total water volume: 2500 gallons
Culture: Four 32cu ft grow beds for a total of 128 cu ft of biofilter
Has anyone experienced a Saprolegnia outbreak before? Am I on the right track? Thanks for any advice y'all have!
