my red eared sliders in de water.

Looks like these turtles are getting pretty big. What do you plan to do with them when the females need dirt to lay eggs in? Not having land access can lead to egg binding, illness and death. Laying in the water is not natural and is stressful and not all turtles will do it.

well one of them already did lay some eggs but they all broke in the water couse i diddnt have any sand..i cleaned it as soon as possible.. its very hard to put sand or anything like that in there so that they can lay eggs in the sand, but it wouldnt be of any use of they put the egss in the sand without something coming out of it. i dont have a male, so i dont think its necessary..

Because you don't have a male and the eggs aren't fertile doesn't mean you shouldn't worry. Yes, you don't have future baby turtles to worry about but you have the health of the females to worry about. They are stressed having to lay in the water. They need access to dirt. You might inquire how others deal with this problem who keep mature females indoors permanently. If they decide not to lay in the water, egg binding is serious and can be deadly.

well, i think i should thank you for telling me this couse i never knew this..
but i also odont know how to solve the problem.. i cant keep them outside.. and i cant make something out of sand in my tank..

you know its pretty easy to make a shelf out of plexiglass, you can put it at water leve, and then perhaps use another peice so you can fill the shelf with an inch or two of dirt, sealant and glue that can be used for such a project is easily bought at any hardware store.

A large water turtle may need as much as 6 inches of dirt to lay eggs in. Some won't lay eggs in containers, only outside in the ground. Some people just don't realize they have to allow for this when they get these little turtles that get huge and it's a problem.

thanks for the advice..
yeah i know poeple dont know that, and petstores just sell them without saying this, and they get in trouble later on, some petstores just say that turtles wont grow much when you put them in a small tank, but this is bullshit of course..

You could divide the tank in two parts with a plexiglass, or put a smaller tank inside, and fill it with sand and soil. Your turtles should lay eggs in there. You'll know when they need to nest - their behavior will become 'weard' :)
Don't worry, most of the female turtles lay unfertilized eggs when there's no male. It's only important to prepare a place for it.