Gravel

[headbanger_jib]

i got a 30g tank for a pair of 6" TSN and added gravel for decoration, now whenever i try to feed them earthworms its a great trouble as the earth worm wriggles under the gravel and dies there in a few hours and fouls up the water
thus lesson learned gravel not required,

 

[arowana man]

had the same happen to.