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Old February 21, 2017   #3
Nematode
Tomatovillian™
 
Join Date: May 2012
Location: massachusetts
Posts: 1,710
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2 per container can avert loss of plant if 1 emitter plugs, and they can.
Otherwise not required in my experience. FWIW I use netafim pressure compensated .5GPH and a filter in line.
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