Hi sorry for delayed reply ,I've added some pictures,would really appreciate your help
I had a few stem plants,only 2 really grew,hygrophila polysperma and ludwigia super mini red,had to cut them back monthly but even then the leafs were a lot smaller and storks about 3rd of original size, I'd replanted them a good 4/5 times and they were fine, I replanted them about 4 months back ,I'd lost heart then a bit, so was a bit erratic with fertiliser,the ludwigia died off and the hygrophila has not really grown since, there is a picture I've added of the hygrophila.
I had lobelia cardinalis, look nice when I first got them,big leafs and purple, that lasted a good 4 months , but the big leafs slowly dropped off and any new leafs were like a quarter of the size and it lost all its colour turning from purple to pale green, by the time a got rid of it the stems were about a 10th of the size
I had ludwigia glandulosa and alternanthera sessilis that didn't grow what so ever,just sat there and festered,about a month later they were just storks
in the pictures you will see my echinodorus harbii , that had been going pretty well, to start with new leafs were growing tall, I guess because of the way I pruned it back but now I just get short stems, but was still looking good, the last 3/4 months thou it has struggled and have had to take a good 20 leafs off, my amazon sword has been the same
you can kinda see by my anubias how new growth is , lighter green and a bit stringlely
I've added a picture of leaf deficiency, going by that I could have a good 5 problems, but then shouldn't fertiliser solve most of that 🤷♂️ I use TNC complet and have some easy life profito too, but what ever I do it makes no difference
there's another screen shot of plants I've had that did nothing and lasted 3 weeks, I first had eleocharis sp mini carpet plant, for about 3 weeks it seemed to be doing ok and spreading out but then just stopped and over few weeks became stringlely and ended up just coming out every day, I do use tap water but still shouldn't have all this trouble, my PH is 7.3 ,could do with being maybe 6.5 I know but still can't see how thats the problem, it's all doing my brain in if I'm honest, I've found out my light is just over 3000 luminance, again not great but should be good for medium standard