Hnguyen;652690 wrote: Thats going to be hard to find a good skimmer for that size tank for under $100. Your best bet for now until you get more money to invest into a better skimmer is to do a 20g WC every week while using the skimmer you have now. You'll be amazed at how well a 20% weekly WC works for your tank. I do a 15% WC with my tank weekly with a really good skimmer and my tank parameters are always in check. Good luck.