About leaf color, yeah, she looks like she could use some clean water for the next little while. Keep in mind, what you fed in the soil can hang around for a while and be uptaked in a slow release manor. nutrients travel up to the plant through the roots using water as carrier, so each new clean water watering, it could still be uptaking and utilizing what you fed in the past that is still in the soil.. so clean water for a while is fine, it's not like watering with no nutrients and the plant will starve of minerals emediately. Besides, the weird shit you see starting on the leaves is with high probability you overfeeding and minerals and elements are reacting down there in too high concentration and imbalance, skewing your pH and screwing your mineral uptake Clean water is good.