Over the years, a kalk reactor has always been an integral part of my reef keeping setup.  I have used one to dose kalkwasser via my RODI top off to boost pH, which is lowered by my calcium reactor, and to augment my tank’s calcium and alkalinity levels.  I did have reliability issues with the one plumbed into my old 225 gallon system so I was on the lookout for a more solid and trustworthy unit for my new 187 gallon setup.

I did some homework and eventually settled on a My Reef Creations Nilsen (Kalk) Reactor. These reactors are available in small, medium and large sizes. I went with a medium, which has a footprint of 8-1/2 inches, 12 inches including the pump, and is 19-1/2 inches tall.

Essentially, this unit was designed to perform straight out of the box. This became obvious to me when I could not find any directions!  Anyway, one of the first things that grabbed my attention about this reactor was its build quality.  The mixing pump is a powerful and reliable Blue Line pump that is connected to the reactor via some sturdy Schedule 80 PVC pipe. There are also two unions that make it extremely easy to disconnect the pump for maintenance while the two fittings at the top make it simple to connect and disconnect the 1/4″ tubing coming into and out of the reactor. Either fitting can be used for the input or output. MORE