08-09-2009, 11:22 PM
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Ideally, you would have a sump system set up to increase your water volume. In there, you could just have a skimmer running. I understand it it can be difficult to setup a sump on a smaller tank, but it can be set beside it in a cabinet or something. Anyways, keeping a smaller thank is not recommended, but it can def. be done.But yeah, it is important to skim..... people do get by without them and some of their tanks flourish; most of them are the more experienced hobbyists who decide to go skimmerless after their tank has matured. Constant water changes help rid the tank of bacteria; this includes some beneficial bacteria. If you are changing 10 gallons of water per week in a 20 gallon tank because you are not skimming, you could end up with more problems down the road. One does not want to rid their tank of any pods etc. on a constant basis especially if you have any livestock whose diet relies on them. I do not find any GOOD skimmer problematic in anyway. If you go out and buy a cheap one, then yeah you probably wasted your money. Still, a crappy skimmer is better than no skimmer to me.