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

[mark]

Used the diamond encrusted bits (just picked up another pack (30 bits) today fr PA for 4.99). Didn't get it but was also looking at a diamond wheel about 1.25" dia, not sure if it's just for cutoffs, grinding or if could be used for grooves.

The spreadsheet is neat that you can put in 1 opening.

[StirCrazy]

Ok, cool.. I will have to get some junk 1/2" and do some cutting on it to see how it works so I know what I am in store for. what did you do for cooling? I am thinking if just haveing a hose running gently where I am grinding.

Steve

[mark]

A small stream of water would work and if was warmer outside probably would have done that myself but since was in the basement just made a dam. I used duct seal, it's a putty used to fill holes when running wires and pipe but could use play-dough etc. Just kept cutting the groove a little deeper not going all the way through so wouldn't loose the water until the end. With a continous stream wouldn't matter if cut through and would be able to follow line better (not blocked by cuttings).