Hi there i have just been offered this filter for £10 has anyone ever used it or knows if they are any good??
it is second hand but like new
http://www.fishandfins.co.uk/renaaqufilter.htm
it states that it is ok for a 4ft tank, i would be using it as a second filter in my 3ft goldfish tank along with a fluval 3+ ( i currently have 2 Fluval 3+s on the tank but one has a big crack on the side so want to replace it!!)