Looks inviting for plants, maybe not so much for (certain fish). I only say that because I think I gassed out my rainbows last month. Since cutting back on lighting this year my CO2 needs are not as high as they were. I'm still fiddling with the Aquatek regulator's fine needle adjustment. A very, very minor shift of the knob and you go from 1 BPS to 4 BPS. Sounds like the GLA rig will be a sweet device.
Assuming those are identical, you should put the drop checkers on opposite sides of the tank to help check for consistent CO2 distribution.
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