if your pot has drainage... technically you cannot OVER WATER... as long as all the drainage doesnt sit in the tray your pot sits on, dump the excess right away. i water my plants under the sink, soak up the entire soil - let them drain for 15 minutes each, then pop them back under the lights.... i also used half gallon grow bags brotha

enjoy - also, remember the weight of the whole pot and soil when its dry ( in your head) and then when its just watered... then wait for it to feel as light as it did when it was completely dry again ( if u use bags... it should honestly feel almost like a feather... less than a pound)