since this plant is a slow grower, you can easily be dealing with a chronic state of nutrient deficiency (seems to be low iron chlorosis for the yellowing, magnesium is also possible but id agree its Fe) and these ferts you are dosing may not have time to correct it for that round of growth you are seeing. matter of fact I can't recall one single time in ten years that a cholorotic leaf ever corrected itself, it's always the next round you have to check, so expect that leaf to get worse even if you correct your nutrient issue.

Id look more to your new shoots and make sure they are normal, if so just prune these when they get ready. a little algae isn't terrible, unless your tank is years old I'd consider it normal as it's still balancing relative to what you keep in it and how you feed and clean it. steady states take a while.

also, even though you listed faster growing plants the amount you'd have to have relative to your bioloading and fert addition would have to be astounding to uptake all that business. In other words, even your fast growers aren't dense enough to really scrub the system for you, although they are still fast growing. you should step up water changes imo for a while and use a low dose sustrate fert pellet to keep ferts out of the water column, not the heavy phosphorous ones be sure and check the lable to make sure these major nutrients and balanced by micro ones as well. There are some pellet fertilizers for tanks that are just phos, potassium and nitrate and those are algae farms although they will sprout the heck out of your plants. You can also cheat 99% of this process by using an oversized UV light although most will recommend a natural approach. When I put one onmy tank it corrected the problem for me, -then- i learned the natural approach and used it on other tanks.