I wouldn't dose it as a root tab. The Cl
- is same as in table salt (NaCl). Plants don't do well with salt, so a heavy dose of that near the roots will prob. kill them.
I would worry more about the plants with KCL overdose. Most fish can take 0.3 g% salt <my golds can take up to 0.9> and you won't get up to that Cl
- concentration unless you use a quater cup or so of KCl in 10 gal
. Most plant wiill be dead at 1/2 that level. (Learn that the hard way using salt to treat ich.)
With the dosing, the best way is to weigh the KCL. Without a scale, you can:
1. Measure the pellet (with a ruler) & work out its volume - if all pellets are uniform & big enough to measure. There will likely be a bit of rounding error unless you own a caliper.
2. Crush a know number of pellets into a powder & measure its volume with measuring spoons. <Coffee grinder works great.>
3. If you have a graduate cylinder, you can fill the cylinder with some oil (so the KCL will not dissolve into it), put in a known number of pellets & measure the increase in volume of the liquid.
Once you know the volume of a single pellet, you can dissolve that into a small volume of water to make your dosing solution.
eg. If the pellet is 1 tablespoon in volume (=15 ml), you can dissolve that into 150 ml of water. 1/3 teaspoon = 1.66 ml .... so you can dose 16.6 ml of your stock solution to equal the 1/3 tsp. << You are basically making a poor man's version of Flourish K
Since KCL is inert, you can store your stock solution indefinitely.