If so, then you might want to consider keeping a gallon container with the same concentration of nutrient that you've been using. Normally this might cause a buildup of excess nutrients, but since you recently did an R&R, and since your garden might not be productive for very long, it might be the best way to proceed.
That said, you can also top off with a more dilute solution. Or plain water would be okay, too.
Today I picked the remaining small lettuce leaves because the growth seems to have come to a halt. I cleaned the harvest and will give it a rest for a while. We have the possibility of a hurricane come close to us or worse this coming week. Also I ordered the back up unit posted here from amazon for power failures.