Garden irrigation - feedback on planning

So, I have updated the planning once again and used the edge strip sprinklers so that the play tower is not watered or completely underwater.

I'm just not sure if that is really good. Theoretically, the sprinklers are designed for that, but it is always a tricky thing with special solutions.

I have also reduced the number of sprinklers in the lower area and only water from one side. This does result in small white spots, but they are minimal.

Currently, there are also 10 zones because I activate all beds individually. There are boxes for 10 valves, but then there is no more space if I want to expand. Hmm...

And one more question about the filter box. Some recommend a filter box in front of the valves, but if I install a fine filter on the float of the cistern pump, then that is no longer necessary, right?

If you have a fine filter on the cistern pump, you do not need an additional filter. You could take two boxes. This way, shorter supply lines to the circuits. Expansion is always possible anyway. You can always connect another box behind it. You can safely use the strip sprinklers. They are proven.

Thx! Currently considering digging a hole and building a wall so that I have space for a well, (filters), valves, meters, and other electronics. I could then mount everything as wall installations and the lawn mower robot would have space on top of the cover. I would just need to figure out how to close it so that the pipes can still go through and the supply line would be a bit longer.

Do you have experience with filters for iron? It might be that our water has a high iron content and it leaves unsightly discolorations. So far, I haven't found anything suitable.

For iron-containing water, I would install a backwash filter (in your case in 1"). It costs approximately from €80. This way you can easily clean it by turning it depending on suspicion...

Hmm, isn't a backwash filter more for the household water line? They all have a pressure reducer, etc., and mostly filter out dirt. I found something like the Naturewater NW-BR10B3. It is supposed to filter out iron, but how well... hmm.

Thought you meant more iron particles. Backwashing filters are good for that. Just like in the household water pipe. Available with and without pressure reducer. And even if included, you don't have to use it. The filter you mentioned is a pre-filter + activated carbon. That is used up quickly. Doesn't make any sense at all. Possible with ion exchanger but expensive. Try to filter the particles and leave the dissolved iron in the water.