Advice from pro please.

using the water, feed idea in soil seems to create problems. People tend to feed too much in soil. the fert stays trapped in the soil. better to just put them in ocean forest or happy frog and avoid feeding unless you're sure you have too. a supersoil mix and just add water is also a good idea, but you have to let the soil sit for about 2 months if you mix it yourself so the bacteria in soil will break the material down. Using bottle ferts is dangerous if you don't know what you're doing. People over fert.

Yeah you're right, should only use 1/4 what they recomend...they will Def get nuts burn if you go at full strength...

Not necessarily. It depends on the age of the plant, how much soil you use, and how often you fertilize. People seem to think they can just do 1/4 strength yet they still wonder why their plants are dying. The reason why it's good to use a soil like happy frog or a supersoil is because these soils remove the guesswork and the tendency to add fert with every watering, or every other watering which is almost as bad. The bottle can tell you how much to mix with water but it won't tell you how often to feed the plant.

Worth every penny!

looks to me to be the start of a Cal problem, VERY SLIGHT, but there nevertheless. A few factors, your PH always remaining at 6.0 could cause Little to zero calcium uptake, let it fluctuate a bit. other than that possibility, they look healthy to me.

Anyone have an idea what's causing this on my hashplant seedling? Crop king...