Careful with that UV, china made one right? I saw one that melted the inner casing caused by the heat produce by the bulb. when the casing melt, it will release toxin into the tank.
For purigen, to recharge it, i put it out in the sun for a week, look almost like brand new after that. haha
bro check with you, where u buy that red ATS light? (The one u hang over a pvc piping one.)