225 gal FT 35 gal sump 4- 27gal grow beds Ammonia 0.0ppm Nitrite 0.0ppm Nitrate 40ppm pH 7.6 Grow beds are moderately full of both seedling and small plants. Tomatoes are at A 24" height. Generally, growth looks good. Look at the photo closely and you will see that the blooms on the squash and zucchini plants have wilted and died. Is this because of a lack of pollination? Or are other things h…