size of holes in my drip plate

  • We are currently upgrading MFK. thanks! -neo
It depends on your water flow.

On one hand, if the holes are too small or aren't enough holes, then the tray will overflow. On the other hand, if they are excessively too large, then the water won't spread out to the edges.

You can find that happy medium by having the sum of the area of the holes to equal the area of the pipe(s) supplying the sump. You will need to estimate how many holes you want to drill; space them out like an inch or so apart. Then after you calculate the cross sectional area of the pipe(s), divide this by the number of holes you will drill. That will give you the area of each hole. From there, you can calculate the diameter of the holes.

The formula for the area of a circle is that pie are square thing:
A=pi r^2
Where r is the radius and pi is 3.14 (you can just use 3).

And you thought your math teachers were bluffing when they said you would use this stuff later in life. :grinno:
 
By the way, exactness is not critical. The acceptable size is over a range of drill bits. You just need to find out what that range is. If you need help with the math, just let me know.
 
I built my own w/d also. I drilled 1/8" holes. My problem was that my drip plate fit exactly which sealed off the space underneath and created an air pocket. The water would backfill on the plate and then "burp/glug" the water down the holes splashing it all over. I thought the hole size was the problem. I drilled some vent holes in the side plate and problem solved. I don't know if you'll run into this too, but I thought I might mention it
 
"There come a time in every project when you have to say 'Damn the Engineers' and complete the project".

:ROFL:

(I say that with love in my heart considering my background)

Otherwise I completely agree with CHOMPERS :thumbsup:

100 - 3/16" holes in a 12" x 12" or 10" x 10" drip plate.

Dr Joe

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I converted a standard 35g to a wet/dry. It is set to run around 600 gph, I frilled my drip tray at 1/8 and have decided to go a bit bigger because too much water collects on top of the drip tray and bends it (thin acrylic)
 
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