[untamed]

Originally Posted by justinl

the one remaining sea hare? what happened to the others?

Does photosynthesis actually require the intake of nitrogen? I ask because i dont really know, but i dont think it does... i think. I had always been under the impression that the raw materials for photosynthesis was CO2 and good old H2O. But for all i know nitrogen could be used up in an intermediate step somewhere... regardless, i would definitely be interested in whatever findings you come up with.

The hair algae made such a dramatic reduction that I returned one of my two sea hares to the LFS because I was worried it would starve.

As I understand it, photosynthesis reaction does not use Nitrogen directly, but Nitrogen might be involved. The product of the photosynthesis is glucose + Oxygen. My guess is that it is the conversion of that glucose into algae body where the algae absorbs Nitrate and Phosphate.

Nitrogen is a key component of chlorophyll...so the algae has to absorb N in order to make more chlorphyll.

...but what do I know...I just keep fish in a tank!