On the internet,
recommended dosages for this drug vary widely. The dosage I
recommend is the same concentration
as the liquid version
sold by pharmaceutical suppliers for aquaculture use.
Fish may tolerate higher
concentrations, but this dosage is effective for all uses of
this drug, especially treatment of
camallanus worms and the
parasite responsible for "Livebearer Disease".
Dosages at higher
concentrations should be used with caution as this is a strong
drug, and fish may show signs of
distress when used beyond
the recommended dosage.I have not heard of any issues during
treatment with plants or
invertebrates, such as
snails, shrimp, etc.
teaspoon,approximately 1 gram, will dose a 100 gallon tank once.
A treatment is a 25% water change, dose,
wait 24 hrs., then do
another water change, then dose again.
Watch for signs of
recovery, and though rare, I will sometimes do a second
treatment after 2-3 weeks. For most
effective treatment, fill
tank to brim during treatment so that medication will get to any
remnants of the organisms you
wish to eradicate that
may be up under rim of the tank.
I would advise removing
any carbon or filtering materials that may remove it from your
water during treatment.
I do not treat in the
dark or reduce the light during treatment as it works
immediately. The levamisole will kill the worms,
and for a particularly
heavy infestation you may wish to siphon clean the bottom to
remove any dead organic material.
Here I will split up a
quarter teaspoon on a coffee saucer with a razor blade into 10
sections by eye, then store in 2 inch
ziplock bags with dosage
marked on each bag (for a 10 gallon tank, 20 gallon, 30 gallon,
etc.).where they are then
stored in a dark, dry,
room temperature location.
The fish generally
tolerate treatment well, and can be treated again when given at
least a week between treatments.
I have used Levamisole in
combination with salt treatments, but I cannot say how it will
react in combination with
other drugs or