What Tank Are You Interested In? J-5000 The J-5000 is a 10 gallon tank and will handle 310 gph, and can be configured to meet any standard or application that our customer may need. Select A J-5000 Tank J-7000 The J-7000 is a 30 gallon tank with a capacity of 1400 gph, and can be configured to meet any standard or application that our customer may need. Select A J-7000 Tank