Biggie and Smalls (Watermelon Auto)

It has started week 7 and the smell is now present, but it is weak to moderate. I am feeding them only once per week with 1/8 of what is on the feeding chart and still the plants got burned... Also there is still some insects...but did not see any ants. I hope they will flower faster than expected. Smalls(60cm) is officially taller than Biggie(50) and is hard to believe that Smalls was eaten by ants on the first day after germinated.