errr 24C is tropical in my book. Every care sheet I have found suggests a temperature of 20 - 24 is about right. In the wild you find them living happily at about 12C.
In the wild this turt habits subtropical and temperate climate ranges. In fact in some places it has to aestivate during the hottest part of the year(wich is way superior to 24C
). The higher temp thing is to acomplish 2 things: put your turtle metabolism in high gear so that she can figth the hillness she is falling to. Will increase its apetite and make her less picky. Also will obtimize vit D3 absorsion and sintesis wich is crusial for increasing bone construcion. No vit D3 no calcium metabolism. This is why in most turt hillness the first thing recomended is to increase temps(but of corse in the particular species range of temps). Also even with water at 12C this turts in the wild can always increase its body temp by basking, like any aquatic reptile to digest food, optimize the growth of eggs inside a female´s body,etc. Oh just remenbered one of the things that make turts having shell problems is the lack of basking ligths. Sheck if you have thouse.
You suggest feeding him chicken. Should this be cooked or is raw best? I suppose I don't need to worry about salmonella, heh.
Dont worry about salmonela. Raw chicken is more sticky wich will help putting suplements in it.
I have tried feeding him pellets, but neither he nor the slider touch them.
You can also pulverize the pellets and ad them to the ckicken mash I told you about earlier
That is how I get my hachlings to get used to pellets
From what I understand they will go for them when they are older.
The main problem I find with feeding him bloodworms (which is what I imagine will happen with things like daphnia as well) is that they break up. Perhaps feeding him strips of chicken and fish would give him something more substantial as well as being easier to add vitamins to.
