Help! Tang Flashing in Copper Treatment

[kkgaskin90]

Week 3 of copper treatment-it will be 4 weeks on Tuesday. Chose to do a longer treatment at lower concentration per Seachem's suggestion since I have an eel. Level has stayed at 0.3-0.4. Small blue tang is now flashing and has white spots... I can't tell if the white spots are scales scraping away or something else. Suggestions appreciated!

 

[Eienna]

Tangs are sensitive to copper! What is it you're treating for?

 

[Reefing Madness]

Stop the copper trewatment, slowly lower the SG to 1.009. Hypo Salinity Treatment.

 

[NanaReefer]

Could be the lower concentration hasn't affected the ICH which is what I'm seeing on him. His flashing/rubbing is a good indication he's being bothered by the ICH.
Personally I've never heard Tangs being more sensitive to Copper treatment then other fish.
Personally I'd remove the Eel and continue Tangs treatment per directions.
We can't just tell someone to slowly lower salinity without giving exact directions. Done correctly needs weeks, not hours, and needs to be maintained for weeks not days.

 

[Reefing Madness]

Hyposalinity Treatment

Lowering Salinity
Over a period of about 36-48 hours (use 48 for most Tangs, Butterflyfishes, Lionfishes, Puffers, and Dwarf Angelfishes) lower the specific through water removal and RO/DI or distilled water additions. Watch pH and temperature of the added water -- match that of the water being replaced. Use only a refractometer to measure the specific gravity. Lower the specific gravity to a reading of 1.008 to 1.009 sp. gr. units. Hold it there throughout the treatment.

Maintenance
If the treatment tank has an active biological filter, don't assume it's working. When salinity is lowered the bacteria sometimes enter into a state of suspension and hold off in their metabolism of ammonia and nitrites. Controlling water quality and especially pH will be the challenge. Check for ammonia, nitrites, and pH twice each day at the start, until readings are zero for ammonia and nitrites. Don't count on the pH to remain steady. It must be checked no less than twice a day and if needed, adjusted.

Make water changes to control organics, ammonia, nitrites, nitrates, etc. If all is steady, still make water changes of 35% or more every other day. After the first water use, the only water to use to make changes is made up water from salt. DO NOT USE DISPLAY TANK WATER to make water changes in a treatment tank, no matter what disease is being treated.

Nutrition
The fish must be offered and gotten to eat throughout the process. The best foods must be given.



Salinity Control
If the tank water salinity is allowed to go up, the Marine Ich parasite will not be killed or stressed into submission. If the tank water salinity goes below the target salinity, the fish are in danger. HOLD THE SPECIFIC GRAVITY very closely within 1.008 to 1.009 sp. gr. units.

Treatment Time
The fish is kept in hyposalinity until the aquarist can no longer see any spots on the fish. After the last spot disappears, the hyposalinity continues for another 4 weeks. If during that 4 weeks, if any spot is seen, the time/clock starts over. There must be a minimum of 4 solid weeks with no spot EVER seen.

Raising Salinity
Now raise the specific gravity slowly. The raising of the specific gravity is very stressful on fish and this part must be done slowly. It should take 6 to 7 days to return the water to its normal salinity. Raise the specific gravity by about 0.003 sp. gr. units or less, per day. Less is okay. No need to be ultra conservative and go beyond 8 days to do this. BUT in no way try to shorten the time to less than 6 days.

When the treatment time is over, there is no need to add back distilled water to compensate for water evaporated. Let that be part of the raising of the salinity. When you go to raise the salinity, add small quantities of high specific gravity mixed and aged salt water.

Continue to monitor all water parameters and chemistries.


PROOF

Verification
After the salinity is returned to normal, hold the fish in the treatment tank for another 4 weeks to verify it is cured. Look for spots every day, very closely. Observe the fish behavior, breathing rate, flashing (scratching) and look for any other Marine Ich symptoms. At the end of this time, the fish is cured/free of Marine Ich IF no other symptoms are seen/observed.
LEEBCA