A friend of mine had problems with lesions (read TB) in his tri's about 6
or 7 years ago ( before it was fashionable ;-) ). He swore that it was
worse at higher temperatures (above 27 degrees Celcius) , and also that
maintaining the general hardness higher assisted in keeping the disease at
bay.
Regards,
Jennifer.
>The more I look into this problem the more I am convinced that the major
>environmental factor is temperature. All bacteria have a preferred range of
>temperature at which they develop and grow. When you change that temperature
>the growth is reduced or stopped. M. marinum seems to prefer the temperature
>of 30-33 degrees Celsius. I found one reference where they said the bacteria
>could be killed with high temperatures but they didn't give the temperature,
>which was a pity. Another one stated that at lower temperatures the bacteria
>could be reduced by half.
>
>All my problems have always occurred during the summer months when the
>temperature was within their preferred range. My aquarium conditions are no
>different during the summer than they are during the winter months so one
>would assume that if other environmental factors were the cause then I would
>have the problem all through the year.
>
>Obviously, the bacteria is there to start with but if we maintain our fishes
>outside the prefer range of the bacteria then perhaps we would not have a
>problem. I do not heat my aquariums at any time as even in winter my
>fishroom usually doesn't drop below 20 degrees Celsius. Unfortunately during
>summer my fishroom in slap bang in the middle of their preferred range ;(
>