Im just curious to see everyones opinion on the best suppluments/stability chemicals for maintaining a reef. I have seen these 2 and 3 part dosing jugs. I dont recall the make. But here is my scenerio. I use seachem complete, seachem carbonate to maintain parameters. I have a 40g tank with a 10g sump. I was doing 5-10 gallon water changes a week depending. But i feel like i was over doing it. So i am trying to establish a new wc regiment. My last wc was 3 weeks ago. I did a 30g water change due to green water. I just have been toping off the sump with distilled water. And dosing seachem carbonate when alk is below 11 and i try to keep my calcium around 420 with the reef. All opinions welcome to get some good ideas going. complete.