The type of timber used will determine which size to use. Not all softwood is the same, and as I am not familiar with the US timber naming conventions one of the other listees would be better to advise. But in general beware of cheaper softwoods as these tend not to be seasoned too well before they are sawn, and can warp quite dramatically (especially in humid atmospheres). My own preference for supports is to use sections on 3/4" or 1" thick marine (or external ply), and if you are prepared to go a begging off-cuts can occasionally be picked up at joinery shops, they might even cut them to size for you on a circular bed saw. This stuff tends to be a stronger, less flexible, and more durable than most hardwoods. ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!