After recently finishing my fish-less cycle i added 13 Harlequin rasboras and 8 kuhli loaches. a few days later i added 6x pepper cory. my concern is that a few of my kuhlis are acting kinda strange, swimming really quickly all over the tank. one of them in particular keeps swimming in a circle, up from the sand and back down again, against one of the sided walls. several of my harlequins also keep trying to get through the side of the tank... 2 or 3 of them now have something like a small blister on their lip.
Water parameters are fine, with ammonia, nitrites and nitrates all at ~0 (if not completely clear, then barley noticeable color. pH is between 6.5 and 7.
i have recently added real plants... could this be an issue? i've never seen kuhlis act like this before. any input would be greatly appreciated.
here's a pic of the kuhli. it's blurry, but may give you an idea of what i'm talking about.
Water parameters are fine, with ammonia, nitrites and nitrates all at ~0 (if not completely clear, then barley noticeable color. pH is between 6.5 and 7.
i have recently added real plants... could this be an issue? i've never seen kuhlis act like this before. any input would be greatly appreciated.
here's a pic of the kuhli. it's blurry, but may give you an idea of what i'm talking about.
