Richies^Ghost;4146414; said:
Nice work here = )
I have several questions if you don't mind...
Did you have any concerns with getting the right amount of holes in so that there would be enough flow without being too weak? Was it trial and error or planned?
Also, do you have any advice for getting the holes to line up neatly?
To be honest it was trial and error. I started out with a 24" bar and 1/4" holes. The flow was too much for the tank and was causing my sand to mound up pretty bad. I then tried a 36" bar with 1/4" holes, It was still too strong. I then just enlarged the holes in the 36" bar to 5/16" and that did the trick, enough flow to keep the sand clean, but not disturb it and blow it all over the tank.
The way I got my holes to line up was, I cut four small...maybe 1" pieces of scrap PVC, and and taped one on each side of the pipe with electrical tape (to keep it from rolling, (if you have a bench mounted vise, that would probably be the easiest option) I then centered my measuring tape on the PVC and taped it in place with Electrical tape also (to keep it from moving allowing all my marks to be in a straight line). I used a Sharpie to mark my 1.5" incriments. Then removed the measuring tape from the pvc. I then was just extra careful to center my drill bit on the mark. I then drilled all of the holes 1/4". I then went back and enlarged them to 5/16". Just a note, if you decide to go with 5/16" holes, use extra care when enlarging the 1/4" holes to keep the PVC from chunking out.
I hope that helps, if you have anymore questions feel free to ask!
As a side note also, I have a 24" bar with 5/16" holes running on my severely overcrowded 55 gal Mbuna tank and it is working out great, it has gravel in it so I wasn't too worried about taming down the flow as much, and the fish don't seen to mind getting blasted but the flow from the FX5 and it has improved my water quality 10 fold because waste can no longer sit on top of the gravel and pollute the water. It is immediately moved into the intake and broken down by the bacteria in the filter.