Oceanic Biocube DIY Refugium

140 Gallon Reef

Frequently Asked Questions

29 Gallon BioCube

Frequently Asked Questions

Planted Aquarium

Frequently Asked Questions

Here are some pictures of the 12 gallon DIY refugium built for the Oceanic Bio Cube 29 gallon reef aquarium.

Oceanic BioCube Refugium

There are a couple primary challenges with adding a refugium to a Biocube. For one thing in order to have a sump below your tank you need to either drill your tank for the overflow or have an overhanging 'siphon' overflow. Neither option is very good for you because drilling a hole in a biocube is way risky and an overhanging 'siphon' overflow won't work if you have a lid on the biocube. Here are the steps I took to solve this problem and add a refugium to my Biocube aquarium.

Here is a YouTube video of the result

Below I have listed the key steps to making it happen.

I converted this 15 gallon Eclipse aquarium into a refugium by drilling two holes into the glass tank. One to bring water into the refugium and one for an overflow.

Refugium

Drilling Glass Step One - Water Dam

A pool of water was created with the cut off rim of a sour cream container and some duct tape.
Drilling Glass Step Two - Diamond Hole Saw

Used a diamond hole saw bought on ebay.
Drilling Glass Step Three - Glass Drilled

These screens were used to keep dibris from flowing into the display tank. Overflow Screen

1)The refugium needs to sit higher than your main display cube so it can overflow back into the main 29 gallon cube
2)Drill one 1" hole into the back of the lid to your 29 gallon biocube just above chamber 2 for the outflow
3)Drill one 2" hole into the top right part of the lid that opens in the back for the inflow back into the tank
4)Put a small pump into the second chamber of the biocube
5)Pump the water from chamber 2, through one of the holes you drilled into the biocube lid, up into the refugium
6)Drill a hole into the refugium to work as an overflow so that water overflows through a bulkhead and back through the second hole you drilled back into your tank
7)In my refugium I drilled two holes. One very near the top to bring water in and then one an inch or so down for the overflow.
8-By drilling two holes in the fuge you don't have to run the inflow pipe over the top and possibly getting in the way of the lid.

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