Re: White spot on purple tang

bogy · Jul 21, 2014

Hi friend
First if I will not listen to members advice I think I will not waste my time to upload photos and asking many times
Second the problem that I can't exactly know the kind of this virus ???
Third :- To let the fish in the second tank for 8 weeks it's too much so I'm trying to find away to let it 1 or 2 week
Last notice sorry for my bad english and I'm thankful for every one help me

TrialandError · Jul 21, 2014

Only trying treatment for 1-2 weeks will not work and the disease will come back worse. It's like you go to the doctor for being sick and doctor gives you medicine and says take for one week but you take for only 1 day and think you all better. But you are not it will not work that way. You have to take all the medicine for all the days doctor says. Same with your fish and making them better. Have to do treatment for all the days not just some.

bogy · Jul 21, 2014

Ok thank you

ma3com · Jul 22, 2014

my friend I think your fish have cryptocaryon not lymphocystis and if you want to compare between them I will try to put photo for both of them

ma3com · Jul 22, 2014

which one you have??

bogy · Jul 22, 2014

I think A

Reefing Madness · Jul 22, 2014

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
This is why I mentioned above this treatment is not easy on the aquarist.
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.

I would also seriously recommend the fish foods be fortified/supplemented with immune boosters.

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.