Ahh… I misread and thought he was running a wrgbii which has different lengths.
I figured that is probably what you were referring to. Almost asked. But meh.Ahh… I misread and thought he was running a wrgbii which has different lengths.
That's all there is to say. This is the answer to the question, as asked.The simple answer is turn your lights down. Like way down.
Fair enough. My approach is a bit different. If someone comes into a thread looking for a quick answer, I'm inclined to offer one. And when that doesn't work, it becomes an iterative learning experience. Of course I know all these things. That's why I hinted that my own tank is heavily planted. Learning how to ask question is half the battle. If I asked this, and someone gave me an answer, and it didn't work, why didn't it work(?) would be the next question.But What you should really ask the op is what kind of plants are they growing and what does their setup look like…are they running co2…what kind of fish…how much organic waste is in your water column etc. . We are all offering the same advice about turning the light down, that seems obvious, but if the op is running two of these full blast on a tank with minimal plant load or low light demanding plants or a tank with a huge bio load than it’s a completely different story. They need to be specific or all this tinkering of light settings will be all for naught. Stepping away from this one until the OP gives a more detailed response.
So there's no difference in umol (Par) values, due to mounting height and/or difference in water depth, and corresponding light height? No difference in the effects of reduced water volume? OK. I stand corrected.Is there really a difference between a 20g and a 72g? Of course. But is there a “world” of difference between the two as you wrote?…well now your just being over dramatic. The principles behind growing healthy plants underwater remain the same.