Mardel Freshwater Maracyn-Two

IndicationsMaracyn-Two is primarily effective against gram-negative bacteria. Internal diseases are more difficult to detect than external ones and early detection is almost impossible. Symptoms of clamped fins, general listlessness, not eating or other unusual behavior can be caused by internal infections and treatment with Maracyn-Two would be indicated.This product is complementary to Maracyn which is primarily effective against gram-positive bacilli. Webster defines complementary as "mutually supply each others lack." This is the way the hobbyist should look at these two premium products. There is no such thing as a drug that is effective against everything. Even the two Maracyns may be ineffective against unusual bacterial strains but will be completely satisfactory in the great majority of cases. By alternating drugs, the possibility of developing resistant strains of bacteria is also reduced.Administration And DosageMaracyn-Two powder should be dropped into the tank (not into the filter). The tablets dissolve rapidly and circulate through the water. Use of a hospital tank is recommended.It is not necessary to adjust pH, temperature, or to make water changes if readings are in the ideal range. Maintain normal filtration and air. If an activated carbon filter is more than five days old, it may be left in place. However, fresh activated carbon may reduce the activity of medications and should be removed. Maracyn-Two is nontoxic to invertebrates.Cloudiness may occur while using Maracyn-Two. Once the full five day course of treatment is complete, a 25% water change is recommended. This along with the addition of fresh activated carbon clears any remaining cloudiness.ImportantBe sure to treat for the full five days using the dosage recommended, even if symptoms disappear after a few days.PrecautionsAny sudden change in aquarium conditions can be hazardous. Make changes gradually. For aquarium use only. Do not overdose. Keep out of reach of children. This product is intended for the exclusive use with ornamental fish and/or other ornamental organisms and is not intended for use with fish for human consumption. Each tablet contains 10 mg minocycline activity.Biological Filtration Not Affected By Mardel ProductsNitrobacter and Nitrosomonas are recognized as the primary beneficial bacteria present in the biological filtration system of every aquarium. Some drugs which treat fish diseases and parasitic infestations are harmful to these "good" bacteria. When the biological filter is upset, there is a buildup of ammonia and nitrite concentrations resulting in fish distress and death. Mardel products have been tested with known strains of these bacteria with no adverse effects noted. When used as directed, they do not interfere with the biological filter.Special Notes On DiagnosisDiagnosis of parasitic infestations and bacterial infections in freshwater fish is very difficult for even the most advanced aquarist. While no drug is 100% effective, the aquarist should not hesitate to try the other freshwater Mardel products as shown on the Fish Disease Chart (supplied with product instructions) if the product you are using does not give you the results you desire.What appears to be the same disease on different fish, or on the same fish on two different days, may not be the same affliction. Antibiotics can be effective against one and not the other. Try the complementary Mardel products when results are not satisfactory with just one drug. Remember, even parasite infestations are sometimes mistaken for bacterial infections. For that reason, concurrent use of Freshwater CopperSafe is recommended. Whenever treating for parasites, always use one of the Mardel antibiotics to prevent secondary infection.