I am a marine biologist professor at a local University, where I operate a 2,000 gallon recirculating aquarium system for classes and research. Alfonso (Owner of OC Reef Care) has been incredibly helpful with procuring seawater for my system. He is always pleasant to work with, and very accommodating to our needs and schedules at the University. Alfonso is clearly a very knowledgable and skilled aquarist, with years of experience that serve his clients well. I strongly recommend OC Reef Care for any aquarium care needs!