Glass containers with No Holes?

[gumbii]

Originally Posted by Ray

As the plant grows and uses nutrients in the LECA medium, it changes the chemistry of the solution by extracting nutrient ions and dumping its wastes into it.

If you fill and mostly dump, you are diluting it, but not really fully correcting it, and as our friend from Phoenix pointed out, the medium will shift around, which discourages the roots from growing.

If you have the drainage holes, and follow the correct method of rapidly filling the pot to the top and letting it drain, you do a very thorough flush at each watering without disturbing the LECA or the plant.

Read more from the inventor of the technique.

i'm just doing it how my grandma used to do it... my family has been growing plants in leca, barro and other clay substrates in mexico for generations... mostly for chayote... LOL... but still... it would be flooded then flushed... that's also how i water my cannabis farm right now...