I decided to go with two themes on this project:
to house a temperate, west coast tidal zone reef
to use recycled, DIY, cheap, low or no tech equipment.
I wanted to house the system in my garage (to make use of the colder temps) but be able to view it from the house, so the first step was to create a porthole in the wall.
I waited till my wife went out of town and...
Here's the entryway
and the garage side
tearing off the drywall
framing in the porthole
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GS500F