Hello, Just tested water 3 days after water change (I always wait a few days) Values: SG: 1.024 Ph: 8.0 Nitrite: 0 Nitrate: 0 Phosphate: 0 Ammonia: 0 dKH:7 Calcium: 420 I use an API reef master test kit + saltwater master test kit. I've never added anything to the water other than salt. I have a tiny bit of algae that is gradually going away. Question is, how do I bring pH up to recommended (8.2-8.4) as well as dKH (8-12). I wouldn't mind raising calcium a bit too though that is within range given by the kit. Thank you.