biological

I just got some kanaplex or kanamycin and I cant figure out if it kills bb or not some threads said yes and others said no. I need an answer please. The tank params are, ammonia:0, nitrite:0, nitrate:30, ph:6.7. Temp is always around 78-79F. It's a 10 gallon that has been running for 5 months...

I have three tanks and use semi aquatic plants in all of them for bonus filteration.