Many people think that undergravel filters are old, outdated, a nuisance to maintain, but if you are just started your keeping fish hobby and you are not ready to spent a lot of money for the aquarium filer, then undergravel filter is a good ideal.
I am owing a 40 gallon aquarium and my undergravel filters have always been good to me. There are some pros and cons of this filter but if you are looking for the best 40 gallon aquarium filter, this post will help you decide whether to use a UGF as a basic setup in your tank or not.
#1 What does a undergravel filter do?
A substantial layer of gravel can act as a mechanical and biological filter media in aquarium set-ups called undergravel filters. UGF is a plate type filter that will pull the water down through the substrate and trap any particles, debris in the water passes through it. A UGF is run by an air pump and air stones, or some types can be used with a powerhead.
#2 Can you use undergravel filter for your 40 gallons tank?
UGF do not really effective but you can totally use it for your 40 gallons tank. UGF work just fine in under 55 gallons tank if you do not want to use bulky, unsightly filters and your aquarium how ugly.
The other reason that make me using UGF for my 40 gallons tank is that it includes no moving parts, simple to install and operate even if you do not have any experience. Simply place the filter grid on the bottom of the tank, put on the substrate, and you’re basically done.
Not only that, no moving part that means it is quiet, The only noise that you will hear with an undergravel filter is the quiet vibration of the air pump
#3 Disadvantages of UGF
UGF is hard to maintain, and it require to be clean frequently. If a UGF is not maintained properly, it will become the good place for the accumulation of detritus and other organic matter, which in turn contributes to a build-up of high nitrate levels.
Other proplems from UGF underneath the filter plate can be the condition for the growth of unwanted bad types of bacteria that may contribute to poor water quality in the long run