It would be a lot easier to just make the water level higher and have it flow through the tubes. Look up the General Hydroponics machine called the "aeroflow." That design is time-tested and easy to build on your own.

Hey,

The things is, that the pipes are large, and putting the water level up would mean a lot of water in each pipe.. the system hangs by chains and I don't to put too much wait on it..

GH puts a spray line inside the tube that has holes every few inches. You can use 1/2" CPVC and a 1/8" drill bit. If you make the water coming out of the line hit the small amount of water flowing through the bottom of the pipe, it will splash up and keep the bottom of your net pots wet. That design shouldn't be very heavy. Chain should hold it fine, provided your anchor to the ceiling is strong enough.

And your reservoir should be larger, 2-3 times the size it is now.

Do you think my pump will be up for it? wouldn't I need more pressure for the spray heads to work along all those lines?

They're not spray heads; they're just holes. The water bounces upward as it hits the bottom of the tube, and the resulting effect is similar to that of a spray head.

And your pump is huge. 6000 litres per hour would be about 1500gph. That's sump-pump size. That's why it's making heat, too. It's closer to too big than not big enough.