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Laminar Flow Issue

N

njhcnwk

Currently I am running laminar flow. I have 2 koralia 3's and an eheim 1262 with a "y" fitting and 2 sprayer nozzles for my return. I have a 75 gallon corner overflow tank. with the overflow sandwiched between the powerheads and return pump i've noticed that a good portion of the particles heading for the overflow get sucked into the powerheads or return flow. I've experimented with removing the y fitting and the sprayer nozzle. It dug up the bottom corner of my sandbed and was blowing sand around. with the sprayer nozzle, the display tank level drops and the overflow gets very loud. so now i'm back to my original setup. i'm currently experimenting with angling the sprayer nozzles to see where that gets me, but i just though i'd post here to see if anyone had any suggestions or insight.
Brian
 
N

njhcnwk

Sorry for the crappy iphone pic, i just snapped it real quick. i've also been playing around with the cones for the koralias to see what effect they have.

laminar.jpg
 
Nickjr000

Nickjr000

Thats a lot of flow goin one way, Id put one on the opposite side or maybe one on the back wall. I know my corals have done better since i changed my flow to be more random from all directions instead of just mostly one way.
I dont understand when you say the water level in your dt dropped and the overflow got real loud? The only way i can see this making it louder, is because ov the water being sucked out of the overflow chamber or somethin. Those powerheads and your return water entering shouldnt impact the level in your dt. Thats more of a overflow pipe or return pump issue.
 
N

njhcnwk

I believe it's because by using one outlet instead of 2 and the sprayer nozzle, the pump flow was restricted to some extent and therefore was equal to or behind the overflow volume creating a level drop. Crappy explanation but theoretically it makes sense. anyway, my tank is by my tv/couch and when i did alot of experimenting to keep the overflow quite. It's not the pipes making the noise, but rather the "waterfall". So basically the lower dt volume more trickled down the overflow (annoying the hell out of you when watching tv) instead of flowing.

Since I still like the concept behind laminar flow i've moved my powerheads to the other side pointing towards the overflow. I guess the concept still applies since the back of the tank would have laminar going one way and the front would have it going the other???
 
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