Keep that light about 30 inches from the substrate and you should be ok. Or, just run two bulbs at a time, and keep it about 6 inches above the top of the tank. You should have had about 60 PAR with the Hagen GLO light.
I have the glo fixture at 14-17 inches from the substrate depending where it is in the tank. I rechecked the par (using the DIY par meter I got from you a few years ago) and at the substrate directly under the light I'm at about 35-37 par. Any idea why it would be so low if your expecting quite a bit more? I appreciate your feedback hoppy!Keep that light about 30 inches from the substrate and you should be ok. Or, just run two bulbs at a time, and keep it about 6 inches above the top of the tank. You should have had about 60 PAR with the Hagen GLO light.