Ricardo Romão
Member
- Joined
- 25 Sep 2015
- Messages
- 37
I just want to say it is difficult to judge a light by the lumens alone. Lumens are a mesure of visible light to human eye, not plants. Plants use light quite differently.
There are the PAR/PURs which are better measures even so, personally the best way i saw was to try the light for many months and see the plant's response.
Michel.
I agree. In fact the PUR is the perfect measure. A good par meters will read more or less between 400 to 700nm. This way, if you have a strong green spectrum (brightness to our eyes), plants will not grow well, however the PAR meter will read it 😉
Also how the plants and fish look to our eyes is very important. The real fish and plant color rendering is expected in my opinion... and some just photoshop it if you see it carefully