uhhh.. you guys.. it was tested, and clearly shown tht you'll have as much as 20C variance between card 1 and 2 if you do it that way.

Remember how paralell works in fluids. The path with the least restriction is going to take more flow, and starve the other.

I HIGHLY DO NOT RECOMEND you loop up your cards like that. Unless you can equalibriate flows to both cards so they get water = or almost =.