Keep in mind that it takes a bit of flow to make those RFGs work right. I think that six of them on a spray bar in a 90 would be excessive and you might not get the result you are considering. One on each side should be sufficient. With DIY spraybars, you have to be careful of the angle of the holes you drill. You might end up with 10 spraying where you want them and one spraying up into your lights. Ask me how I know.

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Spraybar back in, the front holes have holes drilled at approx 90 degrees to shoot flow down the back of the scape, every other hole to the front, I have a vectra M1 for flow ramped down, I figure using rfgs can let me push the flow harder!
I also put this together wrong after a clean and nearly washed my lights!