I actually just take the hood off for maintenence.. There's two 50/50 mini flourescents in the hood, about 6 inches away (or less, depending the screen's position)Now you've definitely got turbulence. Now just get that light down as close to the screen as possible.
That's exactly what I was thinking.. I can monitor the differing degrees of flow and adjust according to growth paternsYou may also learn something as your setup will cause a fan of different water flows. From none, to damp, to wet, to submerged. You may find that what you want to grow likes a particular wetness a lot better.
I was referring to your quote of: "And I have noticed my pH raise up about .15 in a few hours since installing it."devil:
kcress: I think aeration of the water is secondary to the metobolic process of the algae. Some people run their old-style scrubbers completely closed (no air access), and still get great pH increase.
I agree. While the scrubber can and will have a definite resulting change in pH when grown out, the only explanation for the above is the greater equilibration of CO2 with the atmosphere (of your home).I was referring to your quote of: "And I have noticed my pH raise up about .15 in a few hours since installing it."
That isn't enough time to even grown some algae so a few hours is not a biologically valid result.