I just drill a hole big enough for the gallon jugs to pop threw the 4" sewer pipe. The jug is held up by the wood or metal frame. The kind I sell is a general purpose hydroponic mix ( 10-8-22 ). It does say to add 1/4 teaspoon of epson salt to the gallon mix if you are growing vegetables like tomatoes or cucumbers.
I don't use emitters I just let the solution flow every 20 minutes.
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