120 gallon 48x24x24 power heads

[alfieferenzo84]

I have
3x koralia 4 1200gph ea
2x koralia 750 750gph ea
my tank is 120gal 48x24x24 and im having a hard time getting the correct flow
With 2 koralia 4 the sand blows everywhere but with the 750 it dont seem enough,
I have a find sand 2in
about 100lb of live rock 2 piles in ea corner
Any thoughts as to placement or ect please let me know, Thanks

 

[snakeblitz33]

Ditch the sand. Go barebottom. Add some starboard to the bottom of the tank, throw in all your powerheads and your ready to rock!
Sand does nothing but make it have a natural look and gives a place for some critters to hide. Sand gets dirty and has to be maintained. It does not buffer the water.
Then again, it's a personal choice.

 

[alfieferenzo84]

Just spend 200 bucks on live sand not a choice...

 

[snakeblitz33]

Place one powerhead on each side of the tank that points across the surface of the water. One will point towards the front glass, the other points a the back glass. Then, the lower flow powerheads you point one behind the rocks on the right side and point the other powerhead going in front of the rocks on the other side of the aquarium. Try to keep the flow from blowing across the sand on either side, but make sure enough detritus gets kicked up to ensure there are no dead spots. That's basically the jist of it.