Can be dosed a pinch at a time or by premixing a solution with 1/2 teaspoon powder to 8 ounces distilled water. When dosing with a chemical dye, such as Methylene Blue Powder, it is best to dose by color and not by a measured amount.
Treatment of Eggs: When pulling the eggs from the parents place the breeding slate or cone in a hatching container. Add Methylene Blue by the drop or pinch. The water should be a light to medium blue and the eggs should remain visible. Approximately 2-6 hours prior to expected hatch the eggs should be removed from this chemical dye as it is known to burn the gills and is suspected of causing the swim bladder to not properly inflate, greatly affecting the fry's ability to swim and remain suspended in the water column. All traces of Methylene Blue should be removed prior to the eggs hatching, which will occur around 48 hours for freshwater angelfish after spawning if kept at 80F.
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