I have a 55g rez and running about 200 feet of 5/8 tubbing with about 120 small drip lines. My problem is only the lines closest to the rez actually drip... Does this mean I need a bigger pump??
might want to add some valves to the lines and spread them out so you can more evenly distribute the pressure, also probably a bigger pump like those guys ^ said.
Exactly!
You need more volume through those supply hoses.
Bigger pump
Larger supply lines
55 gallons for 120 drippers, that's less than 1/2 gallon a dripper.
Sounds like you need a BIGGER reservoir too.
TMB-