Help with irrigation problems please

Ok, so I have 6 meter square trays

each tray holds 9 x 16 litre rhizopots

each pot is fed by a dripper spiked into coco

each dripper is attached to a stainless steel 10 way manifold with a tap on each outlet

each manifold is fed by a 13mm/ 1/2" pipe apart from two trays/manifolds supplied from a Tee piece at one end of the run

each of these rubber pipes leads back to 13mm plastic plumbing pipe mounted horizontally on batten at a height of about 800mm

The main feed pipe is supplied by an aquarium pump in a 120litre butt from the room next door, not sure of the flow rate but not huge

a solenoid valve has been fitted as an anti-siphon measure

three trays are fed from one side of the tee off the main line in from the pump and three from the other side .

The problem I'm having is pressure regulation to all 6 manifolds, the three nearest the main tee take all the pressure leaving the three at the ends starving.

Will putting inline taps in the pipes feeding the three overpressured manifolds help me to regulate the pressures?

A pic or diagram would be helpful. You can get the pressure/flow corrected by necking down off the header for the first couple of manifolds on each side , then size back up towards the end of the run and last manifolds.

Hope this helps.

Peace and Great Grows

Asmallvoice

The easiest fix is more head pressure to the manifold or a double ended manifold and a larger pumps. Tapering line sizes will also work also but can be frustrating getting it just right. JAS

Thanks for your time guys, gonna have a go tomorrow, let you know how I get on