I just tested the PAR in my refugium and got pretty high numbers, so I am wondering if it's the reason that chaeto is not growing -- too much light?
The fuge is lit with a used Kessil H350.
It registers over 450 par at the surface and 300+ over most of center of the water column
Light hangs about 11" over the water and the water is about 11" deep.
It's an old light, no dimmer. I don't want to raise it higher or it will grow algae throughout the sump.
Is this too much light?
Nitrates are around 1-2 ppm and phosphates have bounced around between .01 and .19 depending on how much I feed and how many hours I run the reactor with phosphate remover.
I get isolated patches of algae in both the fuge (mostly GHA) and the DT (mostly what I think is bryopsis).
The fuge is lit with a used Kessil H350.
It registers over 450 par at the surface and 300+ over most of center of the water column
Light hangs about 11" over the water and the water is about 11" deep.
It's an old light, no dimmer. I don't want to raise it higher or it will grow algae throughout the sump.
Is this too much light?
Nitrates are around 1-2 ppm and phosphates have bounced around between .01 and .19 depending on how much I feed and how many hours I run the reactor with phosphate remover.
I get isolated patches of algae in both the fuge (mostly GHA) and the DT (mostly what I think is bryopsis).