Aussie natives Stocking.

amehel0

Feeder Fish
MFK Member
Apr 3, 2007
2,424
14
0
Brisbane, Australia
anyhwo im calculating what size pump i need for my new filter. heres how to calculate flow requirments for a fluidised bed filter. keep in mind you can have a fluidised bed filter as high as you want but the diamtere is what dictates pump size and vice versa. ok so you basically want to figure out how many cm ofthe cylinder gets filled every second. so lets assume you have my situation.

pump that pumps 11,400 lph and a cyclinder diamter of 200mm. well lets calculate the surface area of cyliner (pie r squared) 314cm

lets get a litres for say 15cm height 4.71 Litres. my pump does 3.1 litres a second
divide 4.71 by 3.1 you get 1.519. then divide 15 by 1.519= 9.8cm of the cycliner filled per second. so will the sand fall that far in a seond ? nope so we know our pump is strong enouht to suspendt he sand.
 

dingoofus

Feeder Fish
MFK Member
Apr 19, 2009
1,150
0
0
Bundy, Queensland, Australia
come on fellas, leave eric alone. He's only 14 or something? you lot are 18 or something. When I was 14 I said some crazy stuff too.
 

syndicate

Fire Eel
MFK Member
Sep 3, 2008
1,176
0
66
Brisbane, Australia
1500 post!
 
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