notching tank for external overflow

[StirCrazy]

Originally Posted by mark

Do you have the spreadsheet for slotted weir fr reefs.org? It's an Excel spreadsheet in their download section. You put in the number of openings and width and gives height and gph.

thats alright, but I am not doing a weir, just going to make a cut out, to much work to make a weir hehe I am actualy thinking of a 8 inch long and 1" down from the top, so acording to there sheet It should be able to flow 2000gph

so for the ball and the 1/8th dermmel bits are you guys just using the high speed steel ones or an abrasive one?

Steve