Question about Gardena AquaBloom Set

One dropper delivers 8.3ml of water per minute.
With the maximum programme of 20 minutes water delivery every 12 hours, this is 330ml per dropper.

In hot periods (30°C++) in high summer I set it to 20 min every 12 hours, in normal summer to 20' every 24 hours, in the rest of the year less and every 48 hours. 1 dropper/pot is enough for small pots, 2-5 for larger ones (small trees!). On holiday, I use a 200-litre folding bin from Griin as a tank; a portable plastic bin also works well.

I have calculated the water requirement using the following page.
https://www.gardena.com/de...

Example: Irrigation of 5 min / 24h for 10 drippers for 10 days results in 4 litres. That means one dripper delivers 0.04 litres in 5 min per day. This means 0.4 dl.

I use a 30 litre wide-necked barrel from the supermarket as a tank. The current setting is 15 min / 12h.