Effective flow rate calculation

[sword28]

I am setting up a new shrimp tank and have been troubled by flowrate issue.
Finally yesterday, I think of a way to measure the effective flowrate.

Here is how I calculate the real flowrate in the tank, please help to see if it is correct.

My tank is 4ft divided into 4 partitions.
The water flow is 4 u-tubes drawing water from tank to canister - pump - chiller - then back to tank.
And there are 4 outlets of water from a long pipe spraying water into each partition.

I connect one long hose to one of the outlet and the other end of the hose is out of the tank to a one litre container.
Then I stopwatch the time taken to fill up that one litre container.

Here is my calculation :
1. Time taken to fill up 1 litre container = 10s
2. This means the amount of water entering into the tank per second = 1000ml/10s = 100ml
3. I have 4 outlets, means in one second, amount of water entering into tank = 400ml
(assuming I have adjusted the flowrate from each outlet to be same)
4. This means in one hour, amount of water entering into tank = 400X3600=1440000ml=1440L

That means the effective flowrate is 1440L/H

Does my calculation makes sense?
The recommended flowrate is 3 times of the volume of water in tank.
My tank volume is about 150 litres, so if my calcuation is correct, this means I have more than meet the recommended flowrate?
1440L/H would mean my tank water is cycled about 9.6 times (1440/150) every hour.

[newlife]

Power....good calculation...you must be good in maths.

Anyway.....when are you showing us your new setup??? So eager to see.....

Waiting....waiting....waiting.....

[schizome]

Logically the calculations seem correct. Have never tried it before though. If your shrimps are not affected by this flow rate and if it's at the higher range of recommended flow rate for your chiller then why not?

[sword28]

Logically the calculations seem correct. Have never tried it before though. If your shrimps are not affected by this flow rate and if it's at the higher range of recommended flow rate for your chiller then why not?

Actually I am not concerned of high flowrate but rather concern that flowrate not enough, because the water coming out from the outlet seems okay only, not like gashing out.
But after this small experiment and calculation, I think the flowrate is enough.

My tank is still cycling, so no shrimps inside yet.

[tachyon]

You should take not of the flow rate reduction once the system is matured as well. The current flow rate would not sustain unless you conscientiously maintain the canister / filter