Ok, I’ll get to the water change today or tomorrow and I’m definitely going to get the skimmer. I just need to make a bit more money so it should be a few weeks. Would you say I should get this before a light and power heads?I would say yes (maybe 50%?). That skimmer I mentioned earlier should also help by removing proteins before they break down. Just remember to turn it off when you use additives, such as bacteria in a bottle (wait around 48 hours perhaps).