Flow Rate Priority: You or the Fish

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It doesn't but some people still believe that water goes downa drain counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. Science has proven that the Coriolis force is too weak to effect such small bodies of water rather it is the geometrics of the drain that dictate the direction.
 
Bud8Fan;736427; said:
It doesn't but some people still believe that water goes downa drain counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. Science has proven that the Coriolis force is too weak to effect such small bodies of water rather it is the geometrics of the drain that dictate the direction.
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Are you trying to tell me that things that I see on the simpsons are not true?
 
repair;736464; said:
Are you trying to tell me that things that I see on the simpsons are not true?
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Haha... I was thinkin' the same thing. Didn't realize anyone actually thought that was true.
 
spds31;736757; said:
Haha... I was thinkin' the same thing. Didn't realize anyone actually thought that was true.
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You would be surprised. A lot of teachers told that to kids. Same with "blood being blue" thing, when in actuality it is so dark red it appear to be purple.
 
I am a big fan of low flow. The most turbulant tank I have is a 75 gallon with a Xp3 (350gph- more like 250-300 with media). My 300 gallon has a 1200gph pump, subtract the head distance and it is probably around 1050-1100gph. I have no debris problems and my fish are happy and healthy.

I have notiseed that some of my fish do like strong currents though. It seems my cichla are always hanging out in the outflow current from my filters.
 
vfc;736144; said:
I spent considerable time last night watching to see how often my African Cichlids pass through the relatively slow flow rate from the two spray bars in the 150G. One spray bar is mounted vertically and directs the current in a counter-clockwise rotation. The other is positioned on the top left side and sends the flow down at an angle to support the CCW rotation.

What was surprising was how much time the fish stayed in the relatively calm areas of the tank when they knew I was not about to add food to the tank. The only time that I actually saw fish coming near the spray bars and turning into the current was when they were going after a floatie or were being chased by another fish.

So even though all (an assumption) my fish were
commercially raised, the millions of years of genetic programming leads them to seek the calm waters found in their natural lake habitat.

Can others comment on where their fish "hang".
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i have have noticed that my haps would hang out in the current and have never really noticed my malawi's do that....probably the diffrence between lake malawi and lake victoria
 
Totally agree that the fish come first. I still haven't seen a device that diffuses flow without causing stress (too much resistance) to the pump. Best I have seen is with under gravel jets and a bunch of them to diffuse the flow accross the entire bottom of the tank. Assuming you don't have bottom dwellers that prefer low currents.
 
I will have 1" return lines and was thinking of drilling a bunch of 1/4" - 1/2" in a length of pvc. Kind of like a reverse strainer.

Anybody try anything similar to that?
 
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