Instructions
Increase the temperature to at least 84-86 degrees as much as the fish can tolerate. Add aquarium or table salt (dissolved in water) at a ratio of 1-3 teaspoons of salt per gallon of water in your tank equivalent to 0.1-0.3% depending on the tolerance level of your fish.
For basic procedures, here are the steps.
1. Dose one teaspoon per gallon of salt or equivalent to 0.1%.
2. After 12 hours and assuming the fish has tolerated it very wellso far, repeat step 1.
3. After another 12 hours, repeat step 1 again.
While waiting, it does not hurt to add a powerhead or airstone to increase the oxygen level. Over the first couple days, your fish will appear worse and will eventually recover as the treatment progresses. In most cases, ich will disappear on the sixth day. However, there is still a probability that some cysts have not yet ruptured so it is advisable to keep the treatment up for full ten days.
If you are not able to raise the temperature at all especially if you are dealing with fish that lack tolerance for temperature above 80 degrees Fahrenheit, you may need to extend the treatment although a good general guideline is to continue 7-10 more days of treatment right after the ich had seemingly disappeared.. At 85 degrees Fahrenheit, the life cycle of ich is quicker. The colder the temperature, the slower the life cycle thus the treatment will extend even longer than required.
Level of Tolerance
For bottom dwellers such as plecos and loaches, you may need to maintain the saline solution at 0.1-0.2% so it will not be detrimental to them although there have been few instances where some catfishes can tolerate as much as 0.3%.
Do make sure your fish can tolerate the elevated saline solution. If in doubt, be prepared to do a water change to relieve the fish of the osmotic stress caused by the salt. Try not to lose focus on the actual saline solution you already administered or you might end up overdosing the salt more than it was necessary.
Clown loaches and young oscars are notorious for getting ich after they are transferred to your tank. These and many others can tolerate salt. If you are unsure about your fish’s tolerance for salt, be sure to look for answers in a reference book or ask an expert.
A salt test kit available at your local fish store will help you get the exact dosage. Something in the range of .2%, is where you want to be.
Water Changes vs. Salt
Should a water change be necessary, make sure you redose the salt solution per the water volume replaced.
For example, a 10g needs 30 teaspoons at 3 teaspoons per gallon of water measurement. If you wish to change at least 50% of the water, then another 15 teaspoons of salt should be redosed to keep the saline solution effective against the parasites.
