Anyone using eductors on return pumps?

[Reef Pilot]

Originally Posted by Myka

That isn't the same effect. Reducing the line increases velocity, not volume. The eductors increase volume. I want to hit the bottom of the tank, not go across the length.

If you are just trying to stir up the bottom to suspend detritus, not sure this is the best way. The flow will be concentrated in one spot, which will be very clean, but the detritus will just be moved to somewhere else in your tank.

I also have the Coralife DC 5800's, one on each side of a 6 ft tank. I set them to turbulence mode which varies where the flow meets to blast the bottom and doesn't let detritus build up in one area. I think all the wave maker type pumps, like ecotech and tunze, work that way.

[Myka]

Originally Posted by Reef Pilot

If you are just trying to stir up the bottom to suspend detritus, not sure this is the best way. The flow will be concentrated in one spot, which will be very clean, but the detritus will just be moved to somewhere else in your tank.

I also have the Coralife DC 5800's, one on each side of a 6 ft tank. I set them to turbulence mode which varies where the flow meets to blast the bottom and doesn't let detritus build up in one area. I think all the wave maker type pumps, like ecotech and tunze, work that way.

Well, I do have the three Tunze pumps on a controller as well. I run the 6055 behind the rocks in my 90 and it works well to keep detritus from settling behind the rocks. I do have one spot in my 90 that I can't seem to get the detritus out, so I just siphon it out. Both the tanks are bare bottom.

Honestly, I'm really just looking to justify the use of the 2-way that's collecting dust. I don't want a closed loop and there is no point in using the 2-way on a 660 gph return line, buuuut if the line has an eductor on it increasing the flow to 1800 gph then perhaps it could be useable.

[Reef Pilot]

Originally Posted by Myka

I do have one spot in my 90 that I can't seem to get the detritus out, so I just siphon it out. Both the tanks are bare bottom.

Well it could work for that, if your Tunze's keep the rest of the tank bottom clean. Give it a try, and see what happens.

[Myka]

Originally Posted by Reef Pilot

Well it could work for that, if your Tunze's keep the rest of the tank bottom clean. Give it a try, and see what happens.

This plan is for the new tank. The rock will be designed much different...if I manage to have the patience to make it the way I want to.