Posted by willard3 on November 27, 2005 at 06:12:36:
In Reply to: pump size?? on an 11 bottle garden posted by gaz uk on November 25, 2005 at 23:27:21:
: hi
: ok i think i can build all the pipe work and bottle side of this thing, but what kind of capacity pump would i need.Ive built my own ebb and flow system recently, a small one for maybe 3 plants and thought that 285l (75 gallon) per hour would be more than enough. When it had to raise the water 6 inchs or so it could barely manage 1 litre an hour.Needless to say i changed it for a bigger one,a 1000l (265 gallon)does the trick nicely.i cant begin to imagine what capcity i would need to fill 11 bottlesat a height of even 18 inchs.Am i working this out wrong? do i need to find a pump which is higher in torque ? if so what kind of thing am i looking for ?
: cheers Gaz
You are going to have to learn about pump head and flow and how they are related.
You obviously have a pump with too little head (pressure) and the flow is adequate