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![]() Hi Daniella3d,
Sorry, it took me a bit to find the references. Quote:
Malachite Green - "Female rats exposed to malachite green chloride had increased incidences of thyroid gland follicular cell adenoma or carcinoma and hepatocellular adenoma, and a dose-related increasing trend in mammary gland carcinoma." taken from this link. http://www.sciencedirect.com/science...78691506000202 Formaldehyde, which is a simple aldehyde - "In 2011, the National Toxicology Program, an interagency program of the Department of Health and Human Services, named formaldehyde as a known human carcinogen in its 12th Report on Carcinogens " taken from http://www.cancer.gov/cancertopics/f...k/formaldehyde For Aldehydes - "Cytotoxicity may also be of major importance in acetaldehyde carcinogenesis but further studies are needed to prove or disprove this assumption. For a large number of aldehydes (relevant) data on neither carcinogenicity nor genotoxicity are available. From epidemiological studies there is no convincing evidence of aldehyde exposure being related to cancer in humans." taken from http://www.ncbi.nlm.nih.gov/pubmed/2017217 I think it safe to assume more research needed on aldehyde carcinogenicity. However there are lots of different types of Aldehydes. In regards to formaldehyde burning the fishes gills and skin. It has that burning effect on humans so it is safe to assume the same effect on fishes. "When formaldehyde is present in the air at levels exceeding 0.1 ppm, some individuals may experience adverse effects such as watery eyes; burning sensations in the eyes, nose, and throat; coughing; wheezing; nausea; and skin irritation. Some people are very sensitive to formaldehyde, whereas others have no reaction to the same level of exposure." taken from http://www.cancer.gov/cancertopics/f...k/formaldehyde Hi Jan, Quote:
Ken makes some good points. Quote:
I am not trying to hijack the thread but from my experience the food that you feed your animals has a direct effect on their health. This is easily observed in cats and dogs. Feed them cheap food and you will go to the veterinarian$$$$ far more often. The same applies with fish, feed them a poor quality food and they won't do as well as if they had a nutritionally balanced and natural food. That is why I started to produce the Ocean Fresh Pacifica Plankton. I found that the fish did much better on it than any other food I had tried. I have used it for well over 10 years to keep fish in top condition. When you feed your fish a food that is naturally high in vitamins, minerals and immuno-stimulants you don't need to use all the other food additives etc. That being said, I am rather biased towards these products for a couple reasons; I know they work from using them myself and I am producing them in sizes suitable for sale to reef aquarists. There is my commercial disclosure. ![]() Cheers, Tim |