Looks like she's hungry for potassium but isn't deficient in it yet, the suggested feeding for the algae nutrient your using is 4ml/l or something like that and your using one. I also see a leaf curling upwards which could indicate nutrient burn, but I only see on leaf tip curling up so I don't think that's the case. They overall look healthy so I would not worry about the tips like that and keep doing what you are untill you can see anything else change.
Nordooobz The week went well except for the yellow spots that are eating away at the tips of the leaves on 2 plants. If someone could tell me what to do, that would be nice, thanks in advance.