Biofilm is a colony of organisms, like bacteria, that attach to each other to form a mat. They usually float on top of water or where liquid residue is present (sides of the feed container where feed has drained.)
PH can drop, rise or fluctuate depending on temperature and time. I would absolutely invest in a probe so you know when to adjust the PH or mix a new batch if you don't want to buy PH down or PH up.
PH can drop, rise or fluctuate depending on temperature and time. I would absolutely invest in a probe so you know when to adjust the PH or mix a new batch if you don't want to buy PH down or PH up.