Algae Reactor Why: My sump is tiny and has no dedicated refugium I'm not a fan of coralline and algae in the sump and skimmer etc (who is really) that would form if I had a fuge light spilling over the whole sump / cabinet area I like gadgets and trying things There are some solutions out there, like the Pax Bellum ARID reactor. Those are pretty pricey, though seem well built. There is also the Skimz MBR127 or MBR157, but that sits internally in a sump, which is so ridiculous. And lastly, there's reactor kits that MarineDepot sells, for example, that's just a regular reactor with LED's around it. This last one has the most issues: heat and corrosion on LED power connectors. I am thinking of putting a BRS reactor together, getting some red/blue LEDs, and running it inline with my other stuff. The only thing I don't know how to do is to cool the LED's and to get LED's that don't have any fire hazard issues. The LEDs that people are using get so hot that it starts to damage the reactor walls. They can also be too bright and basically burn/bleach macroalgae other than chaeto (so they need to dim). I don't know how Skimz does it, but the ARID reactor seems to have a pretty cool heatsink. Skimz I think just has a crystal quartz/glass sleeve rather than plastic, and just uses that as a heatsink into the water that runs through the reactor. Any ideas?