Did you do a foliar or add to water/feed with the epsoms? I'm in week 5 and one of the ladies came down with a few spots and just a slight yellowing between the veins. Just on a couple leaves... Did a quick cal/mag foliar this morning as the spots looked like calcium and the in between veins looked like mag. Had the same issues the first round. Grew a little a long time a go, but still a noob basically. So hopefully I was correct in my assumption...
Are you still doing 4gms B1 and B2? I am doing 3.5 gms of each with a little mono silicic acid and fulvic and that puts me at their EC of 2.4. I ordered some SLF 100 which is supposed to help with salts and plan on bumping things up to 4gms. My water ppm at 230 doesn't help....need to break down and get a RO system. A little scared to bump it up as I ended up with a lockout the last round. Seems not too many people using the flora flex on here, so limited with advice from others besides yourself.
Just finished growing Strawberry Nuggets x Forum Stomper and Strawberry Nuggets x Skywalker. If you don't already, add some sugars at the end. Helped considerably!!! I had two of each and added molasses to one of each one and not the other. Definitely kicked up the flavor!!! Not totally strawberry, but very fruity. Maybe the mix knocked down the strawberry a bit?
Probably a long read here as I try to answer, but I'll try to keep it brief-ish. I need to get some work done anyway. So...
I tried a 1/2 teaspoon mag/epsom salts in a gallon of plain water the first time and watered it in. Within about 10 minutes (or so) I could see the darker green coming back to the top leaves. I did not bother with cal-mag as the FloraFlex really doesn't need it if you are going above 2 grams per gallon of the V nutes. Or following the B schedule to a decent point. And calcium is an immobile nutrient anyway, so not really going to benefit the older growth, and newer growth is absolutely fine. Now, I add the same 1/2 teaspoon per gallon of water, then the nutes when I mix. I do it about 1X per week.
More than likely, as I tried to push the plants to see what I could get away with in VEG, when I upped the Floraflex to 3...4g of V1 and V2 per gallon, the mephisto didn't like it as much. Or it contained too much calcium overall and it started to lock out mag and whatever else once flowers really set in. That is my theory and I am sticking to it.
I think that many of the issues that we may see in flower...they're not necessarily caused by what we are currently doing with the plant in flower. They are residual effects of what was done in veg.
I think you CAN push the FloraFlex full tilt/ no cal-mag V WEEK 1 = 4g of each schedule the entire run, and I have, on the plants in veg and will likely get away with it 80-90% of the time without issue. But then you may have a plant here and there that will exhibit issues down the line - like the Nuggets.
I am finding though, that 4g of V1 and 2 per gallon in veg, is more than likely a waste of nutrients. And in those outlier plants, could cause issues in flower. So...right now I am experimenting on the stuff in the 4x2 with 2 grams of each per gallon.
As far as the Floraflex in bloom. I am running it pretty much the exact same as the FloraFlex Full Tilt No Cal-Mag schedule calls for, and I see zero problems. So that schedule kind of ramps up to a point, then ramps back down. Aside from the few spots on Nugs - which again I believe are due to what I was doing in veg - the fruits are absolutely massive so far and the plants are very healthy.
My PPM out of the tap is around 200. I see no need to go to the hassle of RO or any of that. But YMMV . I PH between 5.9 to 6.2.
I'm not big on advocating for any fertilizer brands in particular. But I do really like the Floraflex. I think it's fairly easy to use and not too complicated, and works very well. And as long as you are not running a 10 gallon, it's decently priced.
One caveat to that is that, you do want to be very observant of what is going on in the tent when you use it. It is fairly potent stuff IMHO.
Another caveat to it is that I don't particularly think that Floraflex really likes playing with other additives personally. It should contain everything that you need. Aside from some silica from time to time, and possibly some cal mag here and there if you are feeding at a lower dosage than the week 1 V schedule, I think the addition of anything else just complicates things. Even Recharge, which I'm not a huge fan of outside of the fist week or 2 of a plant's life.
So, I might recommend trying:
In veg - ramping up the V1 and V2 to about 2g per gallon in veg after week 2 of the plant's life. If things are going ok and your leaves aren't looking like a fake Xmas wreath, you can bump it to 3g per gallon.
In bloom - just following the Floraflex full tilt/ no cal mag schedule pretty much fully.
EDIT to add - I am following the Floraflex full tilt/no cal mag schedule including the Bulky B and Full Tilt additives when it calls for them in flower. Don’t think that I necessarily made that clear.
Also- I do have the V and B foliar sprays, which I have used. I don’t know if they add much benefit? But the plants do look good. And they’re cheap enough and will likely last many runs.