Dont think is a light issue.I had Monte carlo in full shade growing slow but bright and well.Its a new tank.Give it time to establish without moving the plants too much.Is your CO2 in check cant see dropchecker in.
If there is put it low, an inch of substrate to get reading there.Do I use any ferts as you have tissue culture plants and they dont have much reserve in them.The pale look may be from the colour temperature of your light( mine is 6500 and it does give a yellow appearance a bit) or magnesium if your water is soft ish.If U add some epsom salt the plants should green up quick as is mobile element.
Hi I dont really like them hang on dropcheckers as CO 2 being gas is constantly trying to escape and it should be a bit more concentrated near the surface that may give falce reading espesially with low surface agitation. But thats just my opinion.I like the standart ones as I can take readings on different spots depending on hardscape and water sirculation .You shold be fine with amazonia +tropica specialised for an iwagumi layout ferts wise.I am not familiar with your light unit so cant advice on that matter but it is personal preference what colour temperature we have.You say Monte carlo is melting.Is it going sludge like from roots up it may be lack of oxygen in substrate and an airstone may help on lights off untill the bacteria establish properly.
Btw on the video all looks sound to me.
That's OK then. But when you introduce fish later. There will be more waste and more chance of algae. Anyway, I would wait and see because Amano Shrimp are not cheap.
You have a real knack for this Nigel, another amazing scape, yet to see any algae, or real melt
I feel I'm fairly solid on the c02 and ferts for my upcoming set up but Im a bit unsure where to start with my new led? what would you suggest? It has 6 level settings and adjustable legs.
Thanks for your help!