Dual undercurrent with one control bucket on the side will it work?

I drew up this diagram i know its not perfect. My main concern is you usually seen the control bucket on the end and with my 3 screen scrog setup I'm putting the control bucket for the dwc undercurrent on the left of the diagram on the center on the right will this work? Also why do people use white pvc when its not light proof? I understand white is cooler but we put our hand over one end of the pvc and it isnt you can see the shadow of your hand but you cannot with the black. I understand black attracts heat and white reflects it but i would rather make sure its light proof so i went with the black. I can always paint over it with white paint to keep the water temperature down, but i will be running a chiller. These are actually 7 gallon buckets I'm using with reflective tape. Another concern i have is I'd like to use a strong pump to keep a fast current will there be enough time for the water to chill in the chiller if its pumping at a fast rate? The reason im running two separate systems IS because I will be running 8 plants that are the same strain and four different strains in the 4 bucket setup that finish at the same time. I plan to separate the two when its time to flush and use bottles to chill the 4 bucket system. Thank you i would appreciate any input. There will be a over flow pvc which is the grey line in between the two buckets in case a pump goes out or slows down.

Waaaaay too complicated! It should work but if you're using the same res and nutes to top off both systems, why bother with two?

Algae doesn't grow in moving water very well.

Schedule 40 PVC pipe is thick enough to block out light. You may have used sch 20 pipe

I'm doing two because one will finish at a different time and i would like to be able to separate them at the end so i can flush one without affecting the other.. Also as far as the pvc It was schedule 40 a guy at the store said the same thing you said that schedule 40 is lightproof we checked and although almost every system ive seen is built with white pvc its not light proof. So your first answer is probably correct algae doesn't grow in moving water thank you for your swift replies. I already have the black pvc do you think i should go back to the white? I was thinking maybe just throwing some white paint on it or reflective tape.

akslipped702 said:

I'm doing two because one will finish at a different time and i would like to be able to separate them at the end so i can flush one without affecting the other.. Also as far as the pvc It was schedule 40 a guy at the store said the same thing you said that schedule 40 is lightproof we checked and although almost every system ive seen is built with white pvc its not light proof. So your first answer is probably correct algae doesn't grow in moving water thank you for your swift replies. I already have the black pvc do you think i should go back to the white? I was thinking maybe just throwing some white paint on it or reflective tape.

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I wouldn't worry about what color the piping is. Its not an issue. I do suggest insulating, that would also light proof the piping.

The only place I have had algae is in my tubing from the top off res to the control bucket float valve...and it was clear vinyl. I wrapped it with electrical tape..