I haven't thinned them in a few years and didn't fertilize them last year. I went out the other day and they had some heavy string algea in the pot so I cleaned that all out and yesterday they looked a little better. After looking up some info I am going to repot them and add the tomato spikes I saw recommended. Thank you for replying.

Your solution in the bottom may be weak, but the hydroton provides a surface for evaporation where nutrient rich water is being wicked up, and then evaporating along all the surface area of the hydroton under the light, turning into a salt flat without getting enough water to the roots, which the white on the hydroton might suggest. To better establish the roots, I'd actively pour the nutrients below over the hydroton once in the morning and make up the evaporation difference once in the afternoon with distilled water or rain. You could try starting in perlite, and when the roots got big enough tenderly transfer it in the hydroton with whatever perlite stuck to it; also check perlite or perlite/vermiculite mix out instead of hydroton while you're at it. But I think the general problem will be the same, as the fertilizer will crystalize out and less water get to the roots and the local root TDS too high.

Unfortunately, I don't have pics. I garden offsite and won't be there for a few days. The pics wouldn't really show much as the plants themselves look fine. They just look like they were transplanted four weeks ago not two months. There are no bug infestation, PM, DM etc. But for an example, in plot 2 the single squash planted way after the other plot is taking off, flowering both male and female, has 4 squash fruits whereas in plot 1, those squashes are about 2-3 feet in length and just one male flower so far off of 4 squashes. Plot 2 doesn't get watered by a sprinkler like plot 1. Both plots are mulched and fed the same food. It's not the weather because the plot 2 squash is doing very well. The only difference is the darn sprinkler.

I don't think you have to write its obituary just yet, Brady. Yes, it looks like it's drowning, and there may be some root damage, but unless you're seeing more structural damage (entire dead/dying limbs) than leaf margins, I suspect it will recover once things dry out. (Just don't go to the other extreme and let it go bone-dry.) The old leaves won't be able to photosynthesize quite as well and you might lose a crop or two, but if you can regulate the soil moisture and perhaps give a little extra potassium and phosphorus when you fertilize, I'd predict a comeback.