Hi all i thought id share this filter idea i had some years ago you can view a tutorial on how to make it at the you tube link below. I had the idea to make the filter from pop bottles. I use these in my guppy breeding tanks , my betta breeding tanks and my angel breeding tanks. They are very succesful and are ideal as they hold a decent amount of media and you can put in whatever media you want for chemical , mechanical or biological filtration. I normaly buy enough pipe to make around 10 at a time and they work out at round £1 each plus obvioulsy whatever media you wnat to add
here is the link
here is the link