@happi , thanks for taking the time to answer.
StrungOut understood it well, I was making a difference between „plants“ and „plant species“ – Plants would be multiple exemplars of S. repens. Plant species Egeria densa, S repens, HC,… One plant species also has genetic diversity inside it, the A reinekii I have in the EU might have come from a different plant than that in the USA. However, if you repeatedly propagate the same plant you end up with vegetative clones.
Fair enough. I don’t know the precise answer, either. Variability in the response of the clones means variability in the environment. In a theoretical sense, I can think of light and CO2 being 2 parameters that vary a lot from one point to the other. However, I don’t have anything other than reasoning, speculation and some random observations. Was hoping you might have some ideas from your own experience. Still it would be interesting to find out why some individual plants seem to be protected from toxicity/deficiency.
My way of seeing things is that if the majority of the individual stems show problems, we can talk about what caused that effect. However if I pick one twisted stem/leaf and I can move my camera 2 inches and have a bunch of healthy plants, than that is misleading and biased reporting of the outcomes.
Yes you are right clonal plants should grow the same if all conditions are equal, not just water parameters, but also flow, light, space, substrate resources…
Well, some would like to try it out for themselves but we do not know what methods you used as you refused to accurately and comprehensively describe them.
I understand your pain. I often find that some threads from here would be perfect to read as an article in a website or a newsletter. But this is the nature of a forum, it is created with debate in mind, to involve both the expert and the novice, to share experience. In a similar fashion a lecture is created to listen to the sermon and the expert in the field.
In my book, most and 99% is different, one is opinion, one is fact based. Sure encouraging people to test for themselves what they do not believe in is good. But speaking in a negative way to 99% of your audience does not have a place when you are presenting results.
I would assume neither of you is lying and both of you are telling the truth. I would also assume that the two tanks are different, see burr’s post. There is something else that is hurting your plants and not his. Perhaps something that makes traces more toxic, perhaps something completely unrelated. There are still questions to be answered before expecting people to change how they do things now.
So let us see your experiments, see other experiments, see the differences, test for them and maybe we can conclude something.