Hello everyone, I had some eggs hatch a few weeks ago and I now have 7 baby ELN turtles (woohoo), but the problem is one of them just isn't really growing with the rest. He was also just smaller when he hatched too. He's not eating anymore either, I'm not sure for how long, maximum a week. I checked inside his mouth and he has a bit of a mouth infection and I think he may also have a respiratory infection. He's basking more than usual, he can't swim as strong as the others, and is shedding more. They have been getting 90-100% water changes daily because at the moment the water level is small so they can all reach it without too much effort. They have two air stones, a UVB light, heat lamp above their basking dock, and a water heater set to 25 degrees C. There is also 5g/L of salt in the water and for the past week since I noticed this little one might be sick I have been putting the recommended dose of "turtlefix" into the water (which is just melafix to my knowledge ). There is calgrit in the water. They are getting fed once a day of either crickets, cockroaches, mosquito larvae, guppy fry, and chopped thawed and soaked marinara mix. And I try to feed them the turtle pudding every now and then but so far they won't eat it. I take them outside to get about 15 minutes of natural sunlight every 2-3 days. None of the other turtles appear to be sick. Okay so I think that's all the history. So my question is, is there anything that can be done? If I took him to a vet, can they give him antibiotics even though he's only the size of a 20-50 cent coin? I have some medication for fish - tetracycline hydrochloride (aquaricycline) and tri-sulfa - can I use either of these two if I can't take him to a vet? Thank you for any advice.