36w uv sterilizer on 200 gal still have fungus growth

[kendragon]

Your UV would be more effective if you pull water from the tank and return back to the tank.

 

[Timmy]

I think you can use 1 Tblsp per 5 gallons. Check container.

 

[freshfishin727]

I think you can use 1 Tblsp per 5 gallons. Check container.

I'm using mortan solar salt so there isn't a recommended dose for aquariums on the bag.