i have this fixture on my 20L. pressurized co2(about 2bps) turned on 1 hour before lights/off 30 minutes before lights, K/P/Trace dosing twice a week (tap water has plenty of nitrates already), 50% WC every Sunday.
When i started my tank over from scratch the growth was very strong and fast, then i got overwhelmed with algae. I have since been able to reduce and somewhat control the algae issue and my plants seem to be taking off again after sticking to a strict schedule.
From the research I have done since buying this LED in April, I have found that it is considered low light. However, considering I have it on a 20L it is giving me a little more light at the substrate.
I also read comments from other people and many have emailed fluval questioning their neglect of PAR. Everyone received the same response from fluval stating they would release PAR data in June 2013. Well...it's now almost October.
Another response from fluval stated that pressurized co2 is only recommended if you have two of these fixtures on your tank.
I'm still waiting for the PAR data, as are many of you. But this is what little information I can give back!
Last edited by jbig; 09-24-2013 at 08:44 PM.