Wife is at airport, gone for the week. <doh> I mean...

Feeding with every watering increases chances of nute build-up, but some do it fine. I, of course, like doing it my way:

Ok...with the FF liquids, the total weekly dosage is listed on their website. (the link is in my signature, and I've been using it for years)
I use half-strength doses, twice per week with the nutes. Plain, properly ph'd water inbetween...assuring adequate moisture to lower root zones.

With one exception to the schedule. I go half of what FF says to use for the Big Bloom. (it's an organic catalyst/tea) By this I mean...Fox Farms says to use 3 Tbs per gallon weekly in veg. I use about 1.5 Tbs weekly, split-up between my two feedings per week. (approx 2.5 tsp per feeding) I also add 1/4 tsp of unsulphured molasses (per gallon) on feeding days. I use the same 1/2 recommended weekly ratio for the Grow Big in flower, and the 1/4 tsp:gal of molasses.

But if your soil has time released nutes there already, the above schedule is for after the nutes in the potting mix have been exhausted. Likely after a month or so. The plants will let ya know.
If you're going to use the solubles in flower or to induce flowering...use care. That stuff is quite strong.

Allowing the pots to get too dry in flower isn't great. If the pot feels remarkably light when you pick it up...you should have watered yesterday.

Just noticed the meter accuracy you mentioned. Do you have calibration solution? If not, you can test accuracy using a freshwater aquarium test kit on your tapwater, and see if they're agreeing on ph. Do this to warm water, and check accuracy, then the cold water. (ph will change with temps)

The canoeing (and the resultant tubing and twisting) is likely a ph issue. After the canoeing/twisting/tubing, comes nutrient lockout. Everything starts to yellow.

Why are you R/O'ing the well water? I know different regions have different types of aquifers, but I've used mine for years without problems. (except for the 8.0 ph before ammending)

Late flowering orange/brown spots may be a sign of calcium def. This can happen especially if the water has been filtered. (R/O)

Hmm...Usually I'm a lot better organized with my thoughts. Hope you can see through the clutter. Been a hectic morning, lol. :jointsmile: