The manufacturer says in series not parallel.

Apparently the increase per lamp is about 3 degrees in the type of one kit system we are using. The advice they give is that you increase the water flow as you increase the number of lights in series. The water pressure with this one kit is really low. Obviously the thermal transfer ability of your cooling technique (water basin in this set-up) has to increase with the number of lights.


Quote Originally Posted by thatsmefiend
sorry forgot to add... for your water circuit your lights should be in parallel with each other... not in series, the water would be too hot to cool the 2nd light properly