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Re: Fungus on eggs
Chris Browning wrote:
> The package says ACTIVE INGREDIENTS: nitrofurazone, furazolidone, potassium dichromate. None of which I know what they are. I just took the eggs out of their little place, poured as much of the water out as i could without pouring eggs out, and made a very dilluted solution, just barely had a green tint. When I poured out the water though, I noticed that some of the eggs were dyed blue, very blue. Will this hurt them any? What should I do now?
That is *not* the same as the Fungus Guard I have used in the past. It
contains two strong antibiotics and a tanning agent. The color probably
comes from the latter, potassium dichromate. One thing for sure, you are
not likely to have any bad bacteria on those eggs! :-)
I have noticed that sometimes a few eggs will take the dye and the
others will not. Those that were dark seem to have died, while the live
eggs that go on to hatch did not get so deep blue. The anti-bacterial
properties of the dye keep the eggs from spoiling so fast so fungus does
not get much of any way to start.
I go along with the suggestions of others that changing clean water,
often, in very shallow containers is more important than medicines.
That Java moss was a good suggestion, too. It usually has rotifers and
paramecia that eat free-swimming bacteria and keep the water cleaner.
They then provide some good, easy-to-catch first foods when the babies
> Wright Huntley <jwwiii at pacbell_net> wrote:
> Chris Browning wrote:
>>Ok, so stop using the Fungus Clear?
> Read the ingredients. As I recall, Jungle always lists them, and the
> Fungus Clear is probably just salt and acriflavin (or is that Fungus
> Guard?). For eggs, use at way below normal dose levels if it is acriflavin.
>>Well, I just typed a bunch on asking if I could use Rid Ich from Kordon, but then I finally found where it lists the active ingredients, one being Formaldehyde. Well, I guess I'll do some more searching around and try and find something else, I'll first look for what you suggested.
>>Tyrone Genade wrote: On 22 Jul 2002, at 23:08, Chris Browning wrote:
>>>I just acquired my first killifish eggs through the mail, and was told
>>>to use Acriflavin in the water to keep them from getting fungus. I
>>>have searched and searched but can't find anywhere to buy it from! So
>>>I bought Jungle brand Fungus clear. Will this work? AND, I have also
>>>heard that the dye some of the chemicals use can actually dye, and
>>>harden the eggs to a point where the fish can not even break free! Is
>>>this true?! And if so, what should I do?
> Many dyes and formaldehyde work in very similar ways. They are "tanning"
> agents that are able to cross-link adjacent proteins and make them
> tougher. That can kill bacteria, but don't overdo it to the point of
> staining the eggs much or you may make their chorion too tough to hatch
> easily, when the time comes.
> Clean water, frequently changed at first, is probably more important.
> The eggs need plenty of oxygen and freedom from bacteria and decay
> products that can produce ammonia or other toxic substances. I like
> shallow Petri dishes for hatching, as the large surface area assures
> fairly good oxygen content.
Wright Huntley -- 209 521-0557 -- 731 Loletta Ave, Modesto CA 95351
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