Here are pics and descriptions of what I did with the three compartments in the back of the BioCube. I don't care to mess with mechanical or chemical filtration, so I'm only using biological filtration.
The first compartment in the back has a lower and an upper section. I left the lower section empty, and loaded the top section with chaeto and a mini LED light. I need to get a timer for the refugium light, but for now it is on 24/7. The chaeto was full of pods so that was good. The refugium light cost $11 () and seems to be working fine.
The second section has a pull out basket, with a lower and upper section as well. For the lower section, I put two bags of ceramic bio media that also came from my sump. This was nice and dirty and also helped to seed the tank and skip the cycle. I put a couple chunks of live rock (from the overflow of my other tank) in the upper section.
The third section is supposed to have a sponge at the bottom, but I don't have that. This section for me has the pump, the heater, and the thermometer sensor.
So, I've spent $11 so far. Low budget is still in effect.
