Full strength fish emulsion fertilizer every two days seems like a lot. First off all, fertilizer dosage depends on the salt already in your (tap) water. Fertilizer added to tap water can be double strength when compared to the same dose of fertilizer added to rain water. Second, if you are going to use liquid fertilizer, I would use a chemical fertilizer. One that includes chelated metal ions like Fe2+.
It seems to do a bit better though. Fertilizer also depends on your soil or substrate, and your seems to be in substrate. Which likely means a very low dose regular fertilizer is probably good. But maybe it looks better now mostly because it gets more water?
I have some very good growing azaleas in horticulture pods and they can go limp in just 1 windy day because of a lack of water. I feel some people where that may have under-watered their azalea must have seen limp growth. But when I ask, they often say 'no'. I wonder if people recognize it properly when the turgor pressure of the leaves is too low.
