Wow, Theres alot of flat out bad advice on here. I have an 144 oceanic half circle reef thats over 10 years old. Trust me you do not want to skimp on any of your base equipment. your tank will suffer and your free time will be consumed if you do. Playsand from homedepot is not smart, it will work but its a flat out bad idea. Your Protein skimmer should not be cheap, Its a very important piece of equipment. The lights are also very inportant, depending on what you plan to keep. As for the sand, the cheaper sand you buy, the more additives your going to have to dose. Additives cost money, lots of money. You can get by with the basics and cutting corners, but your aquarium will suffer and the enjoyment turns into hours of maintenance and problems. If you want real advice from someone who has lots of experience, feel free to PM me. Ill help in any way i can. Id also consider spending some time on reefcentral or 3reef.