Yep, I have plenty of those 3pin Y's around here Thank you for your answers, helped alot ;D

That's nice I'm guessing that with UV Cold cathodes it would be the same principle, but instead of fans, it would be light (just like a lower voltage lowers the LED intensity on fans, I think). I think I'll just need to be sure about #3 because I don't want to have any bad surprises after I spend 100€+

So, I'm thinking about buying an aquaero, and I have 3 questions to be all set I say it's urgent because I need to buy it tomorrow Here they go: 1) I have 2 120 fans lying around with blue leds (molex conectors) that I would like to use in one of my rads. Will I be able to control their speed using 2 Molex->3pin adapters and then using a Y cable to connect them to the same 3pin receiver on the aquaero? 2) I was also thinking about trying to control my cold cathode UVs by this same way: Will it b...