fireplex
New Member
- Joined
- 14 Jan 2015
- Messages
- 11
I have a Fluval Roma 125 wth 2 X T8 20W bulbs currently and looking at changing to LED, specifically just trying an Arcadia Classica T8 LED as a straight swap.
They have a light output comparison PAR chart on their website http://www.arcadia-aquatic.com/classica-led-lamp/ which shows PAR for a 18W fluorescent T8 FF18 at 300mm depth is 8 PAR.
Now, I guess this is without reflector and everything but this seems wildly away from PAR 30 readings for T8 at 12 inches as per the graphs below.
So, who is right, why is there such as big difference ??
I was going to go for this T8 LED as it showed higher PAR than my T8s but now not sure...
They have a light output comparison PAR chart on their website http://www.arcadia-aquatic.com/classica-led-lamp/ which shows PAR for a 18W fluorescent T8 FF18 at 300mm depth is 8 PAR.
Now, I guess this is without reflector and everything but this seems wildly away from PAR 30 readings for T8 at 12 inches as per the graphs below.
So, who is right, why is there such as big difference ??
I was going to go for this T8 LED as it showed higher PAR than my T8s but now not sure...