DIG 360 Degree Adjustable Bubbler, 0-30 GPH - Pack of 150 or 210Features High volume, direct watering of plants Can be taken apart for easy cleaning Click adjustment from flow off to full flow perfect as the plant grows and its need for water changes UV stabilized material for long life Specifications Flow rates and color codes: Adjustable from 0 30 GPH (0 114 L H) Color code: black Operating pressure: 10 30 PSI (. 7 2 BAR) Available on 1 4" barb or 5" (12. 7 cm) stake with barb 360 coverage Filter requirement: