Beschreibung
Netbow circular dripper ring - pimp up your watering system with this easy add-on that ensures even watering through your media.
If you just want the CNLs (the little emitters on the ends), you can get them here. Or you can buy the white precut lead / drip line tubing here.
This 12 cm dripper ring comes with an optional 80cm of white dripper line and a 2 LPH CNL. The CNL is a Compensating Non-Leakage nozzle which acts as a gateway between the dripper and the delivery line, so precise and equal amounts of water get delivered.
The operating pressure is between 0.5 and 4 bar.
Water Pressure with Pressure Compensating Emitters
Theoretically, between the stated operating pressure range of an emitter, the volume of water coming out should be the same. The diaphragm inside the emitter opens when a pressure is reached and allows water to pass.
In practical terms, even within the specified operating pressure range, the output from a pressure compensating system can vary due to emitter design, small pressure fluctuations and maintenance conditions. If emitters are clogged or not maintained, they will not give you the intended flow rate and watering goes uneven.
Key point on clogging: debris and mineral deposits build up in emitters and restrict flow, so some plants get less water than they need. A partially clogged dripper may still work at higher pressure but restrict flow at lower pressure, because the higher pressure blasts through the partial clog.
Clean the emitters regularly and use a filter such as the Profec filter. House and Garden Drip Clean in your nutrients keeps them clear from the inside.
What Pressure Do These Need?
The CNL wants 0.5 bar at the minimum, which is about 7 PSI, and works up to 4 bar. That is a lower floor than the FloraFlex micro drippers, which do not start regulating until 15 PSI, so a Netbow ring is more forgiving of a modest pump.
The Aquaking Q4003 at 8m head gives you 0.78 bar, so it clears the CNL's floor with a little to spare on a small tent with the reservoir alongside. One trap to avoid. If your feed line has a Netafim DNL in it, and most whip kits do, that needs 0.8 bar to open and this pump makes 0.78. You then get no water at all rather than just less of it. Use the whip kit without the DNL on that pump, or pull the DNL out of the one you have.
For anything bigger, or a reservoir further away, the Aquaking Q800103 at 3 bar with a pressure regulator is the sensible pairing. A DAB pump will do whatever you want but needs a solenoid valve and a controller like the Grow Link system.
The full working on pumps, heads and the DNL is in what pump for FloraFlex drippers.
For the Aquaking pumps you will need the Aqua King to FloraFlex coupling to join on to FloraFlex tubing or similar LDPE pipework. You may also want a FloraFlex hole puncher. It makes light work of punching holes in. If there was ever a tool you will be thankful for, its this bad boy.
Also consider a Digital Time-r for your pump to set your feed schedules. This one goes down to the second and is way way way (!!) easier to setup. Please believe.
Considerations For Netbow Drippers
If you have a large system with 10+ pots that are far apart, use the included 2 LPH CNL (punch holes in your drop line and stab these things into it!).
That way water only comes out once a certain amount of pressure has built up in the system, which gives you even watering across the whole thing. Otherwise the ones closest to the pump get fed first and the one at the back gets the least.
If you have fewer pots and they are close together, so the travel from the pump to your plants is minimal, you can just attach these rings to normal dripper manifolds. They fit perfectly onto existing Wilma (aka Origin) systems. With this method:
- you don't need a strong ass pump, as you're not using the CNLs, but your watering may not be as even. So don't try to blast water through miles of pipework, or the one at the end won't get fed as much.
- You'll also need an anti-siphon valve (use a tee piece to connect it), check out the diagram on the top spin drippers product page for more info.
- Incidentally, if you already have top spins, you can replace their drippers with these net bows.
