Photosynthesis Period of HC

[BraveBuc]

How many hours does HC perform photosynthesis?

Or, is there a clue to tell when it is done? I can tell with my other plants but not this one. I'd like to adjust my lighting period to the HC.

This is my first post here BTW. I've been lurching for awhile. As someone new to the hobby, I grew really frustrated with the info I was finding elsewhere and was so happy to find this site. Tom and crew rock. Thanks. :eagerness:

 

[Tom Barr]

7-10 hours likely.

 

[BraveBuc]

Thank you,

Could you recommend a PAR value I should target at the substrate for the HC? Assume EI dosing and non-limiting C02. Moderate growth is preferred.