How do u know wad flowrate for wad size tank?

[satan_gal]

wait... the size of the sump have no impact on the pump size needed?

I mean..if the sump bigger, the pump shd b stronger too right?

[angelo]

Originally Posted by ranmaru1987

my 5x2.5x2 IOUS using ehiem 1262 only.. but very efficient.. no poop can stay in the tank w/o getting filtered.. livestock is 1 x xb, 2 x ray.. water always crystal clear.. and fish appetite very good..

One 1262? You should thanks your rays lah.

[ranmaru1987]

Originally Posted by angelo

One 1262? You should thanks your rays lah.

no leh.. lol.. my rays feeding on pellets.. everytime i throw in the pellets, there will be pellets that get blown and sucked into my underflow..

[itchy]

Originally Posted by ranmaru1987

no leh.. lol.. my rays feeding on pellets.. everytime i throw in the pellets, there will be pellets that get blown and sucked into my underflow..

Your rays still small, wait till reach more than 14 inch you see the power of rays' bio load , may be much different. Of course also depends how much you feed also.

[satan_gal]

**Does a conclusion**

For those who might have used the search function.. and came here...

Flowrate is dependant on the size of tank, type of fishes you keep
Normally people will have 4-8x turnover of water for the tank

Example :

Originally Posted by vic

Volume of water at 95% for tank is 1008.79 litres + approx 170 litres for a 4ft sump at 70%. Total volume = 1179 litres.

Target turn over rate (exclude reduction from pipes' bend)
5 times = 5895 litres per hour
6 times = 7074 litres per hour
7 times = 8253 litres per hour

Higher turn over rate is better esp for rays and tigers.

When selecting pump, always look at the size of the pump as well, in case the sump can't fit.

Have to also factor in size of pipe and sump.
Too slow, the water flowing down might overflow (which is why you better have valves for the pipes to control)

Too fast, the water might not flow down fast enough
Media will also slow the actual flow-rate in tank.

Faster flowrate will be better mech filtration, slower will increase the bio filtration.. bact will have more time to do their job.

End of the day, if still not sure, seek help from someone else who has a similiar set up, or ask your fav lfs boss - wad's tried and tested should not go wrong.

[angelo]

Have to also factor in size of pipe and sump.
Too slow, the water flowing down might overflow (which is why you better have valves for the pipes to control)

Pump with lower flowrate will result in overflow at?

Slow flowrate will increase bio filtration?

LFS boss sure correct?

[angelo]

Originally Posted by ranmaru1987

no leh.. lol.. my rays feeding on pellets.. everytime i throw in the pellets, there will be pellets that get blown and sucked into my underflow..

Brother, dont confirm, stamp, and chop too fast.

[satan_gal]

Originally Posted by angelo

Pump with lower flowrate will result in overflow at?

Slow flowrate will increase bio filtration?

LFS boss sure correct?

wa lao... if the water flowing down is faster den the pump can pump up...sooner or later will overflow one, no?

Slow flowrater supp 2 be better for bio filtration... supp to la, hor.. at least the bact have time to do their job

I dunno... but so far when i ask the small little fish shop in the wet mkt i always go to... he can confirm + chop wad pump can be used, if he dun carry, he will ask me go Clementi buy. Again, muz see how much u trust the person lor.

[angelo]

Originally Posted by satan_gal

wa lao... if the water flowing down is faster den the pump can pump up...sooner or later will overflow one, no?

You never use sump filtration.

Slow flowrater supp 2 be better for bio filtration... supp to la, hor.. at least the bact have time to do their job

You read from somewhere.

I dunno... but so far when i ask the small little fish shop in the wet mkt i always go to... he can confirm + chop wad pump can be used, if he dun carry, he will ask me go Clementi buy. Again, muz see how much u trust the person lor.

Correct or wrong is very much depend on the LFS boss's knowledge. Nothing to do with trust.

[vic]

Originally Posted by satan_gal

wa lao... if the water flowing down is faster den the pump can pump up...sooner or later will overflow one, no?

Slow flowrater supp 2 be better for bio filtration... supp to la, hor.. at least the bact have time to do their job

I dunno... but so far when i ask the small little fish shop in the wet mkt i always go to... he can confirm + chop wad pump can be used, if he dun carry, he will ask me go Clementi buy. Again, muz see how much u trust the person lor.

sump tank filteration is based on "push to overflow" theory. Water from sump tank is pumped up to main tank and the water overflowed into sump tank.

So the speed of water overflowing depends then on the pump rate...sump tank will not overflow in normal operation.