Plants Turning Brown, Leaf Dying, Black Stuff On Leaves, Etc

LuniqueKero

Hey there! I've had my 55 Gal for about 1 year and a half now. Fish are doing great, plants, not so much! Here's what I do to take care of them..

I do not have CO2, seriously considering it next year

Daily
1 Cup from the bottle of Potassium
Half a Cup from the bottle of Iron
2 squirt of Tropica Premium nutrition (Recently raised that to 4-5 as a test)
1 Squirt of Tropica Specialised Nutrition

Each 3Months
Add Flourish tabs as per indicated on the package

Here are some pictures

2018-12-22_1027.png
 

Fishy McGee

How long do you leave light on them?
 

Ravynn

That seems like a lot of fertilizer to be adding with a low tech tank. What is the brand of potassium and iron you are adding? Also, do you mean Tropica specialized and premium fertilizers? What type of light do you have and how long are you leaving it on?

The amazon swords take a lot of nutrients from the substrate. I would recommend something other than API root tabs. Maybe flourish tabs or find someone that makes homemade osmocote root tabs. Add 1 to every sword every 2 months. Sword leaves also transition to submerged leaves or to new surroundings. Personally, my sword leaves did look like that... they melted then grew new, greener and more slender leaves.

If you add too much fertilizer and your plants are not growing, you will start to get some nasty algae that will gladly use up the nutrients that the plants are not using.

For the anubias, can you wipe the brown stuff off with your fingers? It looks like it could be too close to the light, hence the amount of algae on the leaves. Cabomba seems to be tilting to one side towards a light source, so that could mean you have insufficient lighting. Same thing with the reineckii, they need quite high light.
 

LuniqueKero

I keep my lights on 3 Hours in the morning ,5.5 in the evening.

The brand of iron and potassium is Seachem.
Ahh and you're right, I was using FlourishTabs, I made a mistake.

My swords have been in my tank for quite a while now, they would have adapted by now.
And I could try wiping it off, but it would probably just come back no?

And yes I'm aware that adding too much fertilizer can be dangerous, that's why I'm keeping a close eye on the tank, so I'll see what happens with a bit more fertilizer, I have quite a bunch of plants so I figured maybe they use up all of it and its not enough.

Yes I did mean tropica fertilizers
 

Ravynn

I keep my lights on 3 Hours in the morning ,5.5 in the evening.

The brand of iron and potassium is Seachem.
Ahh and you're right, I was using FlourishTabs, I made a mistake.

My swords have been in my tank for quite a while now, they would have adapted by now.
And I could try wiping it off, but it would probably just come back no?

And yes I'm aware that adding too much fertilizer can be dangerous, that's why I'm keeping a close eye on the tank, so I'll see what happens with a bit more fertilizer, I have quite a bunch of plants so I figured maybe they use up all of it and its not enough.

Yes I did mean tropica fertilizers

What type of light are you using? A 55 gallon is deep and you might not have enough light.

I asked about wiping the algae off the anubias to see what type it is. Brown diatom algae can usually be wiped off the plants easily and is caused by a lot of nutrients in the water, which is why it's most commonly seen when cycling a new tank.

I also just realized you are adding all of this fertilizer daily. You should be adding it once or twice a week max being low tech.
 

-Mak-

Extra fertilizer is not dangerous and does not cause algae. First and fourth pic look like calcium deficiency, second pic looks like nitrogen deficiency.
 

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