Overview Product Description Tideline Refugium - various sump products including TideLine Sump with dimensions of 20"x18", 30"x16", 36"x18", 48"x20", 72"x22", and options for minor blemishes available. Associated brands include Tideline Filtration. Product Videos Custom Field Product Reviews Write a Review Write a Review × Tideline Sump Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *