I have two Red Eared Sliders that are both babies and I have some questions that I couldn't find the answers to in my research. First off, I have had these two for three days and they've been in a 20 gallon tank for the last 2 days. One of them loves basking, he is always on the basking dock taking a nap. The other seems to swim all day and only comes up to poke her head out. She also seems to have difficulty climbing the dock although I have seen her on it twice before. I got a new dock today because I figured that they may want separate docks, but she still only comes up to stick her head out then continues swimming around. The new dock is easy to climb. There are some little plastic plants in the tank on which she climbs onto the leaves. She slept on the leaf last night and napped on it today. I know that they won't drown unless they can't get their head up to the top, but she is always swimming. I am also worried that she is not basking enough.
Next, the water has become very murky upon the addition of the new basking dock which is a half log type thing. I also added some rosy red minnows I believe because I was reading about the need for live food as a means of nutrients as well as exercise in hunting. I do not know what is causing the murkiness/cloudiness of the water because the filter is good for a 20 gallon tank. Also, the tank has only been in use for about 2 days so the water is clean. There is gravel at the bottom which has been cleaned as well.
FInally, the two RES's seem to get along well with each other. I have seen them swimming with each other and floating over each other. The other night they fell asleep right next to each other and one of them had her claws on the others' shell. However, i see them biting at each other now and then, but it is only a bite then they swim away. I am wondering if they are just doing this because they are hatchlings and don't know what everything in the tank is or if they are doing it as an act of aggression.
Please comment back, any feedback will be greatly appreciated!

