Plants turning brown

[Fishfinder1973]

My area has very soft water,can this be the cause of brown leaves,as it’s all my plants from Anubis to sessiliflora?

 

[Neleono]

What kind of fertilizer do you use? what light do you have? Pictures also might help, along with your tank parameters (pH, KH, GH, Temperature, etc.).

 

[Fishfinder1973]

I haven’t tested the KH or GH yet,but I live in a soft water area.
pH is 6.4

 

[Barry Tetra]

It looks like diatom on the leaf, scratch it to see if it come off.

 

[Fishfinder1973]

I tried that Barry,it isn’t coming off.I notice there’s a split on the leaf in the photo.
The new(ish)sessiliflora stems and throngs are green,but the older ones are brown with only the new offshoots being green.

 

[Colin_T]

They are terrestrial leaves that are dying off.

Most aquarium plants are grown out of water in hydroponic systems. When the plants get put into an aquarium, the terrestrial leaves die and new aquatic leaves grow.

Make sure you have a good quality iron based aquarium plant fertiliser in the tank for the plants, otherwise they will use up their reserve nutrients and then slowly die.

 

[Fishfinder1973]

Thanks for the sound advice Colin?
can you name a good iron based fertiliser?

these plants have been in the tank for a few months now and they have got worse over the past 3 weeks or so.

 

[Colin_T]

I used Sera Florena but there are other brands too. Most are similar, just make sure its for aquarium plants and is not a carbon fertiliser.

 

[Fishfinder1973]

Ok Colin,thanks ?