vanderdraay
Fish Fanatic
hi im relatively new to the tropical scene ive been running a 125l tank for a year and a half with 2 filters a fluval 3 internal and a tetra tec external in my south american cichlid community tank , i need some help and advice i want to run under gravel filtration through my external filter, is this possible and what is the best way please advise many thanks !!! 
2 pristolepis marginata
2 rainbow cichlids
5 kribensis 3 f 2 m
1 german blue ram
2 blue acara
2 common plecs
1 rainbow parkinsoni

2 pristolepis marginata
2 rainbow cichlids
5 kribensis 3 f 2 m
1 german blue ram
2 blue acara
2 common plecs
1 rainbow parkinsoni
