The rest of your plants look very healthy.
Yes these two plants are the ones acting weird.
Do you know the capacity and dimensions of your tank, output of your filter l/h, and the intensity and duration of your photoperiod?
It's a
90cmX45cmx45cm
I am using 2 filters:
- 1 is "purely" a biological filter with some Seachem Purigen at the last stage prior water re-entry to tank - Atman AT3337S 18W rated
1500 L/H (truthfully probably half that)
- 1 is a pre filter with only filter pads corse, medium, fine, floss: Eheim 2213 (or 250) 8W rated
400 L/H
The first week or so I only let the Atman run without electrically plugging the Eheim but flow was kind of slow due the increase resistance created by the pre-filter so I plugged the pre-filter to help the main filter.
Photoperiod: 10h to 18h so
8 hours. Co2 comes on
30 minutes before lights turn on.
It could be a CO2 issue; bps doesn't really mean anything. Ideally you need to aim for a drop checker colour that is constantly lime green at lights on and all the way till lights off. Your drop checker looks like it's not quite there.
Yes true bps doesn't mean anything. Drop checker is usually light greenish but maybe not lime green as you say. I don't bother looking at the chart and comparing hardness with PH. Perhaps I should and also increase co2 injection.
Nice scape. The rest of your plants look very healthy.
It appears that it's only your faster growing stems that are suffering, the feathery plant, Rotala sp.?, looks a bit thin lower down as well. The slower growing plants seem fine, so my guess is that it's a combination of poor CO2 implementation and nutrient deficiency.
The only potential outlier is L. palustrus since it supposedly has a low CO2 requirement. However, under intense lighting it will likely be more CO2 and nutrient demanding.
Have you increased the light intensity recently ?
And is it only older leaves on the H. pinnatifida that are suffering ?
Yes that is
Rotala wallichii. That video was taken around a month ago so the plants look good. I will make a new one and post it.
L. palustrus could indeed be a combination of Co2/light and nutriment deficiency unbalance.
Light intensity was increased somewhere around 2/3 weeks ago and I also increased slightly co2 injection but really nothing much perhaps 1/2 bubble more. Light went from 60% to 75%. It's now at 100% since yesterday because I removed that piece of s***t of Commander 4 and so there is no way to regulate the intensity now. I will move the light slightly up this evening to compensate but I think it will not be enough. That's a WRGB 90 from Chihiros by the way. Not the best I admit but does the job ok I suppose.
On the
H. pinnatifida yes the issue seems to be on the lower leafs, so yes the older ones.