Sometimes it seems that a new product hits the market every few days but usually it is a familiar concept re-arranged in new packaging. Just occasionally though, a really new idea is presented to the hobbyist which does not cost a fortune and performs a useful purpose. However, it has to be said that most of the items I am about to list require a certain amount of investment and it would be wise to compare several makes, not only for quality but also value for money.

Q) How do I go about setting up a basic undergravel filter for a marine aquarium?

 A) Over the last ten years or so, marine filtration has advanced in leaps and bounds, leading many to believe that there is no future for the technique that sustained marine livestock for several generations.......the undergravel filter. Such beliefs are, of course, highly misleading, for undergravel filters work very well and are an excellent starting point for newcomers to the hobby; especially those whose budget will not stretch to all the high-tech gadgetry now available. Having said that, we cannot ignore the basics of good marine aquarium husbandry and any beginner is urged to start with a reasonably sized aquarium; 36"x12"x15" (90x30x35cm) must be seen as an absolute minimum, although 36"x15"x18" (90x35x45cm) would be a much better starting point. The larger the tank, the greater the degree of water stability and the happier the livestock (and you) will ultimately be.