im going to have to build a diy reactor for my new fx5 the filter pipes are 1" what diameter pipe would be best to use as the body off the reactor should i stick near the 1.5" mark or should i try and go larger plan on makeing it about 500mm long co2 entering at the bottom water at the top its for a 750l tank but would like it to be able to cope with higher volumes of gas if necessary any help appreciated it will be similar desigen to Ed Seeley 's here
http://www.ukaps.org/forum/viewtopic.php?f=20&t=4626
http://www.ukaps.org/forum/viewtopic.php?f=20&t=4626