weird theory with ferts & ich & velvet
for the longest time, my tank has a persistent case of minor ich or velvet because i would see my fish scratching themselves... but it was never so bad where they were in danger..
but ever since i started dosing, it's gone... could have KNO3 or K2O etc.. kill those parasites? I know that (NaCl) salts interfer with ich's life cycle... And what we're dosing are kinds of salt. and we do it regularly so the parasites don't have a chance to take hold.
if you ever had an outbreak while dosing, let me know.