4 ms·
Not sure of the math but I had about 17 liters of grow medium, 2w of air pumps, and 50w of leds 24/7 and was producing a shocking amount of biomass. Also, fres
by nkingsy 6y ago
Not sure of the math but I had about 17 liters of grow medium, 2w of air pumps, and 50w of leds 24/7 and was producing a shocking amount of biomass.
Also, fresh spirulina is most comparable to tofu. Very little flavor, gag-worthy sponge-like texture. Was trying to make fish feed but had to eat most of it myself as the fish and the dog wouldn’t touch it.
Shut down the operation after a few harvests. Mine was kept warm by sitting on top of a water reservoir that water cooled other grow lights for my main indoor garden, but keeping it warm would be the major cost in most climates, as it grows best in 90 deg F water.
- dvh 6y agoBlack soldier fly larvae (BSFL) are used to compost waste or convert the waste into animal feed. Fly larvae are among the most efficient animals at converting feed into biomass.
- lazylizard 6y agowhat fish?
- labawi 6y agoAt 8 MJ (2000 kcal) / day = 90W (average) diet, to scrub CO₂ you would need to bind about that much energy on average¹. Assuming optimistic 50% LED efficiency and 90% algae efficiency², you would need at least about 90W/50W / 0.5 / 0.9 = 4x as much production. So your setup could not scrub a typical person's CO₂. Nevertheless, fully optimized 17l of algae do seem believable, if well cared for. ¹ ignoring diet levels and differing CO₂ / H₂O ratio for fat vs. carbs etc. ² no idea how efficient algae are, but wikipedia says they are very efficient