Hi john

Yes the frog still eats very well ! I suspect that this appears after a meal of live congo tetras because i was a little concerned about calcium improvement, other thing are those heat mats not achieving optimal temperatures at this time of the year ,they are doing 24C/75F day 20C/68F night !
About cleanness is a must for me, enclosures have been checked twice a day sometimes more.
What i can do to raise a little bit temp is lowering the inches on substrate but frogs could get close enought to bottom..
But now i have to start with some kind of treatment on the ill one!!! any suggestion ?