Cwesto,

First off I follow the FF feeding chart to the Tee. Only alterations are 1 tsp. ph down per gallon due to my tap ph is 7 and after adding nutes it jumps to 7.5 to hot for MJ plants. The ph down brings it to a ph of 6.5 perfect for MJ plants. Then in flowering I add 1 Tbls. of mollasses and again adjust ph to 6.5 usually 1.5 tsp. of ph down. I also adjust my plane water to a ph of 6.5 for stability of the soil ph.

When I water I do it in the bathtub as you can see in my pics. The reason I do this is when I water I use an entire gallon of water or nute mix per plant and let any excess drain out the bottom. This ensures nutes are getting to the entire root system, then the plane water watering washes away any salts and excess nutes from the previous watering.

Time between waterings varies depending on pot size and plant size. I go by bucket weight in the earl stages of growth then in flowering I can tell by the fan leaves when watering is needed. I do this by looking at the fan leaves at the very top of the cola, when the plant is happy and well watered these leaves are at like a 75 deg angle from horizontal or appear like reaching for the light. When watering is needed these leaves will start to go to the horizontal position. I learned this from experience and using a moisture pen untill I put 2 and 2 together and no longer needed the pen. I recommend you do the same untill you get the feel of it.

You can use any alterations to the nutes you wish but the key points are maintain a constant watering ph of 6.5 and alternate between plane water and nute mix for watering.