m0useanswered grow question 3 years ago You should not water till run off with dry amendments, you end up washing away all the nutrients the microorganisms have unlocked / broke down for the plants from the amendments.
Top dress every 3 weeks with 2tbsp per gal or about 7.9-8ml/L of medium.
Feeding weekly is one way of doing it, but have not tried this out myself.
I water my plants in a saucer and if any runoff comes out it gets suck back up into the medium when I let it sit.
Good Luck!