Hamburg-Matten system (by using long tanks and dividing them with blocks of Poret) could really drive down the cost of a
big setup. The Poret foam itself has lots of other uses and is a very handy material to have around the fishroom – in one
of Greg Van Der Poel's videos he calls it “Duct Tape for Fishtanks” which, if you know anything about DIY, is very high
praise indeed!
Links
http://www.janrigter.nl/mattenfilter/ A long but excellent article, somewhat technical, about Hamburg-Matten filters.
This article contains the formulas for working out optimum flow rates -and the science behind them.
http://www.swisstropicals.com/ A breeder and shop in the US who sells Poret and has many interesting applications
for it – including several not covered in this article. Lots of information and photos of Poret in action in a sophisticated
production fishroom.
http://www.poret-aquarium-filter.co.nz/ This is Greg Van Der Poel's site. He is a New Zealand based breeder and
runs an online shop for Poret – He has several pictures and videos of Poret being used in different applications,
including his own African Cichlid breeding facility. This is probably the most cost-effective and accessible source of
Poret for Australian aquarists (it is where I bought mine). Freight is cheap and Greg is a delight to deal with.