Do you need seperate res for water cooled light?

Can you use same res for water cooled light? By doing that you dont need chlorine and the nutes should keep algae from building is this right?

Are you serious?
What nutes are you using that are clear when mixed up?
Yes you have to use a different rez man
Some dark colored nute mix is going to block out a lot of light

Water cooling like hydro Innovations? Go check out their site they have a system for cooling your rez with one cooler but you still need a second rez for the cooling system I believe.