Description The Adaptive Reef In-Line Probe Holder comes with 4 probe holder ports and plugs for any unused ports. Accept most standard probes, such as pH,ORP and salinity probes.      Specifications   Holds up to 4 standard probes Max Recommended Water Flow: 200GPH Manifold Plumbing Size: 3/4” Manifold Dimensions: 15.5L x 3W x 4H inches Related