your ph should be an 8.0- an 8.3. also, LR does exceptional good for your tank. i suggest getting some asap. LR also adds a variety of colors and "life" to your tank. for the first 4-6 weeks, you should have let your tank cycle out. with LR and LS, you can speed up the process, but not in 2 weeks. you can also get a product called Cycle, which provides needed bacteria for your tank. its a great product and lowers ammonia levels as well. plz get a testing kit that tests all parameter before going any farther. now about the ph. when you get LR, you can buy a product called liquid reactor. its a calcium buffer system. not only does it keep your ph at proper levels, but also strengthens your LR, and sonn to come corals. its a great product. plz test for other parameters. good luck