I only knew the sound levels of submersible pumps and they are very quiet, obviously because they are underwater.
This time I decided to go with a pump like this
This one sucks the water from the outside. I did choose it because it is strong and has no parts which can be corroded from fertilizer, which was a concern with a submersible pump.
Unfortunately the pump is too loud. Maybe it has to do because there is still a bit air in the system when sucking water automatically. But of course it is because these types of pumps are much louder than submersible pumps.
I was thinking to build a soundproof box of osb/drywall with some soundproofing material.
I need to know if the pump can overheat if it runs in such an eclosure and if I need to do some sort of air hole? On the website is written: "A thermal protection switch protects the motor against overload." https://www.gardena.com/int/products/watering/pump/garden-pump-3000-4/966625801/ So that means it will shut off before it starts to burn itself to death?
How to do an airhole so the noise doesnt get trough it? Space is restricted, so no sonoduct construction
What is best material for soundproofing?