Could someone please explain to me the difference in performance of different types of filters?
ie. hang on the back filter. if i got on of these would i have to cut a slot in my lid?
external filter. and a internal filter.
could you tell me how often you have to change components on the external and hang on the back filters?
i have an internal one at the moment and it pretty easy to maintain.
i have a 28l tank but ive upgraded to a 101l tank. so i need a decent filter that isnt going to cost me an arm and a leg to buy or maintain.
please dont get too technical. im rather new to all this.
Thankyou in advance for your help.
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