@Koan Idk what they are calling hard water but I had it in blasting sand with
KH in the 5-6 range for a few years before I ever had an aquasoil tank. That first pic I posted of my AGA tank was sand, and Ive never used much in the way of root tabs or O+. So like
@GreggZ said I know for a fact it can feed exclusively, 100% from the water
Unlike Gregg my experience differs in it being moved. Ive never seen it balk at getting moved, ever. Mine get yanked around all the time
The only thing Ive ever noticed is occasionally a mature one can just stop growing and sit there doing nothing for a couple of months. Sometimes one will make several babies at the base during this time but not always. I think thats what is known as "going dormant". Itll just sit there doing nothing for literally 2-3 months. Then take off growing again
Back to water column dosing, I would venture a guess thats what yours needs - richer ferts in the water. Now dont tell me youre dosing exactly what Im dosing because Im gonna be stumped then! lol
It *might be your low co2 theory but I kinda doubt it. If youre dosing rich we'll go with that, hah. Im gonna go out on a limb and say it needs more macros in the water
Thats how these people come up with all these wild requirements - Dont move it! lol
Ive never seen a plant that cared if it was moved. Not one! Barclaya doesnt care about being moved just like AR and downoi and all the other plants I hear "experts" say dont move. The reason their plants cant take moving is because it resets the roots and their plants are used to a lean water column (except Greggz lol) and feeding primarily from the roots. Notice its always "low dosing" people advising not to move this or that
In those type of tanks they are right. Heres why
Pull any plant up and move it, leave all the roots intact, stem plant, rosette, sword crypt, any plant. Pull it up and move it, replant all the existing roots. Then wait a week or two and pull it up again. All those existing roots will be melted away and therell be lots of new ones. None of those existing roots survive
My experience is roots are dead the minute you pull them up. The plant will immediately, and rapidly make new ones. But if your plants are used to root feeding there's gonna be a transition period where it does poorly until it gets some new roots. If the plants are used to a rich water column, they will not even notice theyve been moved
Thats also why fast growing stems can often stunt if you replant a top in lean water. Pantanal, Rotalas, etc. It takes a minute for them to make new roots, and often the existing top is the sacrificial lamb to fuel new side stems. Its not even a problem, just the plant reacting to a change.