Thank you for your support. I've checked the pH
several times.
The pH is 6.5/6.6 every time. pH of H20 is between 6.3 and 6.5 every time; I have a pack of pH test strips. 1 gal of 7.5 pH water + 1/4 tsp lemon juice (concentrate) NOT "lemonade." bringing the pH reading to a moderately orange color hence the 6.3 to 6.5 reading. 6.2 is more of a
yellow-orange color.
I've decided it is NOT a
high pH issue. I know you may disagree but I've checked several times. Your plants may have been showing the same symptoms but it could have been strictly a high pH issue in your case. The soil is FFOF as well which is notorious for getting increasingly acidic as the organic components are continuously breaking down. I've yet to hear anything about it becoming more alkaline. I'm thinking at this point it may be a cold soil issue + a generally problematic individual (possibly slightly over acidic water) seeing how none of the others are being affected except of course the three little seedlings nearby but they are young and susceptible another reason I suspect cold temps. I might add a regular 60W incandescent to try and raise the temps in the bottom of the box, might help with keeping pots warmer. I do not have a thermometer, as I type this I've decided to look around the house for a human thermometer and try that in the soil. Soil does feel a little cool but not so that I would expect a problem then again
I am not a thermometer
. Keeping in mind that a phosphorous deficiency can be the result of a few different factors including pH lockout - but also cold, wet soil or/and compacted soil. Thanks again for the continued support. Still on the fence. I'll be posting pics if there is any recovery over the next 36-48 hours to show anticipated progress.