I have a constant drip going via a doser, but I have ~65 gallons in the system, dosing ~2mL per hour.
In truth, I have my 5% vinegar diluted down to about 2% and it doses just short of 5mL per hour of that solution, 24/7. I manually primed my system for a week beforehand, building up a bit of a bacteria buffer in the "acclimation" phase of carbon dosing. Then I hooked up the doser, let 'er rip, and started cleaning out a cup of skimmate every other day for a week. It tapered off after that.
This is just a temporary setup however, at that dilution I'm running the risk of a bacterial bloom inside my dosing container. Once my upgrade is done I'm going to run straight vinegar (5%) 24/7 to keep the SPS happy. The LPS is liking it too. I saw a little bit of a GHA outbreak initially from the extra carbon but it disappeared quickly as nutrient levels dropped.
I kept up with my 5gal/ wk water changes that are incurred from sucking up blown-out detritus too BTW. From 25+ to 5 with so little fuss, it was great.