David Gulyas

Aquaponics Greenhouse Design

Aquaponics coming to Bloomington, Indiana!  Here is a design rendering for the project.  We are currently finishing the foundation work on the 24' x 48' greenhouse, and the trusses are soon to arrive.  You can see the 900 gallon tanks in the back, and each is connected to six 4' x 8' hydroponic beds which will host a variety of greens.  Each row of six beds is connected to one tank, constituting a "node".  I haven't shown any plumbing to make a clearer image.  Each tank will grow about 1000 lbs of tilapia, ready for harvest after 7 - 9 months.  The fish effluent from the tanks will be piped to each bed, where bacteria in the gravel beds digests and oxygenates the ammonia and nitrite to nitrates, which is taken up by the plant ribosomes.  The water drains back to the tanks!  I'll be documenting the process with videos and images, so stay tuned!

More Beautiful Urinals

While working the ISEA booth at the Green Home Fair this past Saturday, I spent some time talking to the Kohler rep, Larry Harpster, who had great pictures of the Kohler Waterless Urinal .  I promised him I'd blog about them; something about them seems so ... poetic.

Urinals that Use Less/No Water

The New York Times shares what's new in residential urinals...

"The new urinals bear little resemblance to the grungy fixtures you might see littered with cigarette butts and hanging from the wall of a truck-stop men’s room. Consider, for example, Duravit’s McDry, an elegant, teardrop-shaped model that sells for $895 and doesn’t require water to flush (instead it uses a biodegradable blue oil, penetrable by a stream of urine, which acts as a barrier to odors)."