Pls Help me for system

I plan to build a drip system
with PE pipe (20 mm), stopcock, filter, check valve (3/4 inch), 19-20 mm hose and a pump with a tank of 90 liters.

My question is how many liters per hour does the pump have to deliver? Surely 800 L/h is enough

Does anyone have an Autopot filter?
AutoPot 16mm in-line Filter, 10,50 € • cmp_seg1 = 6559 & et_cmp_seg2 = &etcc_var=CjwKCAiAzc2tBhA6EiwArv-i6TgCu1QVCnsknbb5MKkUtczDuLdzv4gPzXXM57V96UMFdSYHM5IhZhoCK1YQAvD_BwE&gad_source=1&gclid=CjwKCAiAzc2tBhA6EiwArv-i6TgCu 1QVCnsknbb5MKkUtczDuLdzv4gPzXXM57V96UMFdSYHM5IhZhoCK1YQAvD_BwE

In the best case scenario, I need another set because I use a 19-20mm hose but don’t know what size (inches)
Can someone tell me the diameter of the filter, maybe one of you has a filter like that

I thank you for your efforts