Thank you Jamromhem and GPS, good points from both of you. I am building 3 systems at the same time right now. Just taking my time as I have grown hydroponics 20 years ago. Back then not much info on different systems (I had a box style flood and drain) washing machine
pump and gray box timer. My wife says I am more into building systems than growing vegs. I don’t know she may be right. I am glad I found this site and thankful for all the info I have received/learned. Andre