I noticed that under the same light and ferts, when I switched from excel to DIY CO2
there was a dramatic increase in plant growth. Did not happen overnight though. Took several weeks. I dosed excel with the DIY CO2
to hopefully makeup for the inconsistent CO2
I believe increasing glut will be beneficial to a point. Too high and it becomes detrimental to certain plants and some inhabitants. If you do observe no positive changes in plant growth with increased glut, them perhaps the limiting factor is something else such as ferts or light.
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