hey,
The larger roach is still doing the upside down running thing, the nymph, well im pretty sure its dead. Im thinking about maybe putting the other down-let me know if you think this is a good idea. I have checked and the rest of the colony is fine.
I have never given them any banana- they only have the same fish food, romain lettuce, iceburg lettuce and carrot and apple every so often as a treat. I also have water crystals in there but its from the same batch ive being using since i got them. All of the fruit and veg is cleaned before i give them it and the temperature is what has been reccomended by people on here and care sheets.
I still have no idea what has caused this, just hope it doesnt happen to any others