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I agree with Stan...you are bombarding them with too many chemicals at this point with no firm diagnosis. SAP is an opportunistic fungus. It is present in nearly every pond, but rarely causes a problem unless things go wrong somewhere else along the line. Then sap moves in and causes a LOT of problems. SAP attacks fish that are weak or injured. It rarely causes a problem in a healthy fish in warm water.
Comments:
1. You are WAY overstocked. In 5500 gallons you should really have no more than 20 fish, preferably no more than 12 or so.
2. Superverm will kill goldfish VERY dead. I don't know about the highfined shark....suspect it won't do him any good either.
3. Superverm is dangerous and can burn fish. It is only affective against flukes. Do not even consider using it without the diagnosis of flukes, and then consider using something safer.
4. You need to get someone to properly diagnosis your fish before proceeding with ANY treatment! Adding more chemicals will cause more problems at this point then you already have.
5. You have dumped so much crap in the pond that your filters are probably dead. Expect ammonia levels to go up and be prepared for it. Have some ammonia binder on hand. You will also need to have salt on hand in case the nitrites start to go up.
6. spot treatment of SAP is easier to spot treat on affected fish. Sedate the fish, clean affected area with peroxide and spot treat the area with malachite green.
7. Clean the pond completly. Get all mulm, debris, leaves, plant material, etc. out of the pond. The fish will need a clean environment to heal.
I wish you all the luck in the world fixing whatever went wrong. SAP is really nasty and can kill fish quickly. You need to get to the bottom of the original cause though and fix it.
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