Cistern for garden irrigation - Which pump?

Simple and cheaper would be ground sockets. I would rather recommend Rainbird or Hunter. Gardena is not so robust and you only pay for the name

As I have seen, the water sockets from Rainbird work differently; you still need some kind of key or pipe. With Gardena, you can simply connect a hose. Or I found the wrong one.

Just put on a simple Garden coupling and use as usual. Some cans still have a tap built in.

I've now installed a few components. Understood so far. The water pipes will simply run underground to the desired locations. Whether underground boxes or pillars, I can decide later. I'm only still unsure about the connection of the pump. What does the weather protection housing look like and how is it attached in the cistern?
Is the pump standing on the bottom of the cistern?
I found something else. Someone basically built a kind of filter out of KG pipe and submerged the pump there. So no dirt gets sucked in. Is that something?

Again about the pumps. The following were mentioned and those that come to my mind right now:

Manufacturer/Designation	Motor Power	Flow Rate	Max. Pressure	Price	Warranty
Gardena 6100/5 inox automatic	1100W	6100l/h	4.7bar	250€	5 years
Gardena 6000/5 automatic	1050W	6000l/h	4.5bar	330€	5 years
T.I.P. AJ 4 Plus 100/57 AUT	1100W	6000l/h	5.7bar	320€	2 years
Oase ProMax Pressure 6000/8	1100W	6000l/H	5.7bar	420€	3 years

In my opinion, the longer warranty period of the Gardena pumps should be emphasized. I could not find any major technical difference between the two Gardena pumps, despite the price difference. Above all, the inox one is cheaper, which one would expect differently.

Unfortunately, the pump from T.I.P. has quite a few negative reviews on the internet. It also seems to be available without automatic control (without AUT in the designation). If you were to buy this at Globus Baumarkt, you would get 7 years warranty, but it would then cost 460€, so quite a bit more.

A friend of mine has the Oase and is very satisfied. It also costs more and only has a 3-year warranty.

Pull the PE-HD pipe to the desired spot. What you connect afterwards does not matter. The pump should be placed just above the ground. A filter is not necessarily required. Either hang the pump on chains or ropes. Weather protection housing is for example FLT 300200130 TR Wandgehäuse IP65, 200 x 300 x 130 mm, transparent

Just check Google. Fixing either with good mounting adhesive or better to anchor it in the cistern.

The tip has more pressure and thus more flow. As a connector, I recommend the one from Unidelta. If you absolutely want a filter, I would install it behind the pump.