I was thinking exactly the same!
.... Then I had a sweet smoke and started to think it through.
Simple I thought ... 8 days - that must be about 1 litre worth.
but then comes the maths (ugh)
I don't have a dripper - but if I did, I'd count the drips in 10ml and scale that up to find out how many drips are in 1 litre.
Then, I'd divide those drips by 8 (clever stuff lol) ... Then I'd need to divide that by 24 for the hours in the day .
then to set the rate I could divide that number by 60 to find out how many drops per minute I'd need.
then I'd fiddle with the dropper until I got that or just under that amount of drips per minute.
ooof - Maybe a wick would be easier
edit.. Would thin string work maybe? This shot growing is way above me lol