Drilling Extra Holes in 2217's Outlet Spray Bar

[nagukush]

Hi Friends !

Someone suggested that drilling extra holes in the Outlet Spraybar of the Eheim 2217 will help me reduce the speed ad force of water outflow. Just wanted some guidance on this, as I dont want to spoil the originality of the thing.

How many holes to I drill ? Should the holes be on the same side of the current holes or should they be made at random sides ? Also is it better to make more holes on the top side or bottom side (I have the spray bar installed 'vertically')

Please guide me freinds...
Thanks !
Kush

 

[Tongue33]

If spray is vertical. I would probably ad a horizontal spray... Maybe start with 6 total and see how you feel about the flow.. I would also make the new holes smaller than the original ones.


Make sure you space them accordingly.. And so that they are spaced so that you can add as well..

Good thing to remember if you do this is,...

"You can always dril more holes.... It is a little more complicated filling them back up "

 

[1oooop]

:iagree:well... all your questions will depend on how you prefer it... how much force reduction for hole #... if you want holes on the same side or at random places...

 

[nagukush]

Hi Friends !

Thanks for the kind advice and replies - But will random holes reduce the flow more or will on the same side be more effective ?

 

[Star_Rider]

water seeks the path of least resistance.

the more holes you drill the less water reaches the end of the spray bar.

I would start with one hole at a time and see how the spray bar functions.

 

[TwoTankAmin]

Here is the thing to bear in mind. Drilling holes will not reduce the overall flow rate, it will only change the direction if you drill the holes so they are not aligned with the existing one.

I have a pair of Eheims for which I have drilled extra holes. Some are in line with the existing holes but most are oriented to cause flow in a different direction. One spraybar is mounted vertically and the other horizontally. My goal was to disperse the flow so it was not all in the same direction and thus reduce the chance of dead spots. Most of the new holes are oriented to direct the new flow at 90 degrees from the main flow. The holes in the verticle bar are designed to get flow across the back of the tank as opposed to all of it going towards the frony. On the horizontal bar the additional holes are drilled to point some flow downward as opposed to the main flow going across the tank.