Sand and undergravel filtration works have a look at this link
http://www.ohiexchange.com/armke/forget_the_fish.html
I was thinking of getting a fluid sand bed filter for my cichlid tank when i came across this post.
All the same bacteria that live in your filter are also in your gravel, sand...
Hi all great looking site
My set ups are a 100lt cichlid tank running at a ph 8.0 temp 82c and a gh of >10 this contains two yellow labs, two large zebras and 10 at about 1inch long, 1 male giraff i think and two tin foils as dither fish and 1 plec. I do 20% water change a week. apart from the...