New here and glad to be here. I'm pretty new to aquatic plants, and have stumbled along the way. I am fascinated none the less.
I have a 75-gallon tank with the following plants:
Swords: Melon, Red Flame, Amazon
Java Fern and Anubia
Green Cabomba and Frill Plant (Foxtail)
Wisteria and Moneywort
Red Wendtii and Lutea
Telanthera and Red Ludwigia
Some sort of Monkey Grass (can't remember the name).
My substrate is three inches of gravel on top of about 1 - 1 1/2 of Flourite. I use Seachem root tabs, dose Seachem Potassium 2-3 times a week, Flourish Comprehensive twice a week, and Seachem Iron once a week or most of the time, twice a month. I dose Excel every other day.
My lighting is a double fixture T5NO (one full spectrum, one colormax) and one T8 full spectrum (came with tank).
Diatoms are still an issue after 9 months, other algae not so much. I live in farm country, source water measures 20 ppm Nitrate but the tank absorbs this quite well and my tank Nitrate readings are typically 5 -10 ppm. I have never measured Phosphate or Silicates, but I would imagine my water is rich with them (hence the prolific Diatoms). My PH is consistently 8.2, sometimes it has been as high as 8.4. My GH and KH is very high as well (I forget the numbers).
My plants are doing fairly well with the exception of the Wisteria which my Barbs keep chowing down on. My Cabomba and Frill plant won't stay seated. The stems rot at the bottom and uproot. I have never found a solution for this. My Crypts (Lutea and Red Wendtii) don't grow too much. My Lutea is stable but my Red Wendtii melts, grows and then melts some more. My Moneywort is another slow grower. My Anubia is rather pathetic, seems to be barely hanging on.
My plants struggled quite a bit until I added the T5NO fixture. I do believe this was the key to finally getting most of my plants to start growing and becoming healthy.
I'm assuming that my hard water may also be a contributing factor to slow plant growth.
I also have a 20-gallon, gravel and T8 Full Spectrum lighting with a Java Fern (doing quite well) and a newly introduced Red Wendtii (going through a bit of a melt)
Any thoughts, suggestions, would be most welcome. This has been a science experiment for sure.