Du I have to turn off the aquarium light when using JBL Punktol?
The information given in some online forums that the light needs to be switched off during malachite green treatment is both correct and incorrect at the same time. Malachite green is converted into leucomalachite green, which has a weakened effect on Ichthyophthirius. This conversion is dependent on the pH value and takes place faster when the pH levels are higher than when they are low.
In addition, the filter bacteria have adapted to malachite green in the past decades, with the result that they decompose it faster today than they did in the past. This explains why the instructions for use involve multiple dosages at intervals of one or two days. If the infection is more severe, we recommend you use JBL Punktol (in the various forms) with full doses daily after a 50-60 % water change each time.