planning to convert a 2ft x-marine tank to a simple freshwater tank...
short term idea - specimen tank - 1 single betta! later - maybe betta + tetra..

so guys.. what kind of filtration system should i use.. currently i have a undergravel filter + hang on.. i think i wanna skip the UGF.. and just use pebbles or sand as substrates.. is this possible..? or is it more harm then useful..?


regards..