Many folks out there use DIY algae reactors for nutrient control and it can certainly be a money saving option. However, there are risks involved. Ok, full disclosure, I do sell Pax Bellum ARID algae reactors and I do use one on my 187 gallon reef tank.  Nonetheless, the information I am about to pass along is based on findings from the inventor of the ARID, who spent 13 years developing a patent protected product.

Inner Tube DIY Algae Reactors

So let’s get into the specifics.  One type of DIY reactor out there utilizes a plastic tube on the inside of the reactor that houses the LEDs. If this plastic is not actively cooled then there is a good chance it will eventually crack and possibly shatter, which would MORE