If your selling that system , no problem, if buying it , you must start some place. Cash cropper can not effort problems.
With gravity flow you only need one pump, 1 float switch, if its a real good one, no problem. Gravity always works, on earth. Well over 15,000+++ system cycles. 3 days missed because of 2 pump failures, one computer battery. Other than that real its boaring.
Note all parts are Industrial , so failure is in 1 million cycle min.
Example
float sw. $6 normal $80 for industrial
Pump $25 normal $120 industial duty
hose clamps $0.20 industrial $0.90
controler timmers 3 * 12=$36 industrial $140 + ss relays 12@ $10 total $380
Chart recorder ??? free, industrial $280 16 channel
Co2 control By guess , free, Industral $1,100 with back up for change out.
1/3 crop pays for it all, and free for decades
Failure rate is about .0009%,+-.0002 Plus you can do it remote.
Its like a small car , one accident you can buy a lifetime of gas @ $10.00 a gallon if you live. (ask you insurance company)
There is real fast, fast , and half fast.
grams/watts/months is the bottom line. $$$$ is the bottom line
good luck , and have fun , cause with out fun it boaring
Beatnic's for better pot,past Old Hippie