Thanks everybody for the tips, very appreciate it.

You are right ShroomsKit_Disgrace, but I never thought that the coins will go that high :O ...since I am still only able to exchange within Kraken (withdraw blocked) I can't trade that much. Made a little bit with BTC -> ETH -> BTC, but thats it. I hope Kraken will activate my withdraw option soon to be able to trade on Poloniex.