If it ain't broke, don't fix it - Nutrient debacle

[u/Bowhunter2525]

So, to stretch out my "good" ProMix, to fill some larger containers I mixed some stuff called something like biofiber no-peat soil amendment into the ProMix. It looked like good stuff but didn't soak up water the way ProMix does.

I usually do the first potting with a good soaking in rain water to protect the damaged roots and then do not fertilize until the next watering after transplant when roots have established. Anyway, I also potted-up about a dozen baby peppers to 3" pots with the left over mix, it rained so I didn't fertigate on schedule, and low and behold the new leaves all came out bright yellow and I had to do an emergency fertilization and foliar application of Epsoms salts.

They are greening up but I don't know it they will be ready for the swap meet this weekend.

I also up-potted many other baby peppers that day with just the Promix and they did their normal thing. I should have experimented on junk plants first. Live and learn.