I have a fluval spec v 5.6 gallons with stock lighting. I have a plant in there that is slowly dying. I can't for the life of me remember what it's called, but it was huge and healthy when I bought it from my local fish store.
It started becoming slightly yellow with no other symptoms. It was at that time I started dosing daily with ten drops of Flourish Excel to make up for the fact that I have no CO2 system. I have noticed that dosing is causing new growth and things are perking up elsewhere in my tank, but it didn't seem to help this plant.
I decided maybe I was deficient in iron. I have very hard water and I read that very hard water can lack iron and that yellowing of plants is a symptom of this.
So I bought Seachem's Iron additive. I just got it, so I have no idea if it's going to work or not.
However, my plant looks so bad now. I just trimmed off all the dead leaves. They turned yellow first and then sort of melted off into brown goo. Now I'm noticing even the leaves that were staying green have holes in the centre of them. I'm totally baffled and I think I need an expert diagnosis here. I want to get more plants, but I don't want to waste money on them if they're just going to die.
The tank has been up and running for one month. I have four shrimp in it, an oto, three ember tetras, two micro crabs, and a handful of trumpet snails. I've been testing my tank weekly and I always come back with 0 ammonia, 0 nitrite and a small level of nitrate.
I also use fert in the form of root tabs, one of which I placed under this plant.
Here's a pic of it, after I just finished trimming the dead messed up leaves. I left one on though so that you could see it in the photo. Sorry that it's not the best.