Quote Originally Posted by stinkyattic
use a cheap diner-style ketchup dispenser instead.
A turkey baster works great for this purpose, too. In fact, I use the baster all the way until the plants are taken out of their 2gal pots and transplanted into the 5gal ones. Tedious, but effective. It also gives me the opportunity to get a close up view of the leaves and see if any tell-tale signs of problems are starting to show.

In this respect, I envy the hell out of hydro growers who only have to change water once a week, or so. :jointsmile: