Plants turning brown

[Ekuallaizer]

Hey everyone, Some of my plants are turning brown?
They are growing visible roots to i assume they are growing great?
i have the light on from 7:00 till 22:00 and i give them ''Flora grow Carbo Co2 Alternative'' every day

Anything i could do?

 

[Hendre]

Far too much light really, 8 hrs should be enough.

A few questions:

• What's the tank size?
• What lights do you have?
• What plants are going brown?
• What fertilisers are being used?
• What's the active ingredients in the flora grow?

What I suspect could be too much light and not enough fertiliser. I also suspect the active ingredient in the carbon is glutaraldehyde which can be dangerous to fish and plants if overdosed.

If you can give more info then we may be more able to help

 

[xxUnRaTeDxxRkOxx]

The lighting period is too much, on my planted tanks I run my lights from 8am to 4pm... Plants need other nutrients beside co2, like macro nutrients N-P-K, and micro nutrients... Any time the lights are on plants are actively "feeding" meaning they're taking in nutrients whether it be through the roots or through the leaves. So I would at the very least get some Flourish comprehensive liquid nutrients and depending on your tanks size I would start off by doing 2 cap fulls of it every other day.

 

[Fat Homer]

^ while i do agree with the above, would still be good to know exactly what plants OP is dealing with...

 

[Ekuallaizer]

it's a 55Gal.
Lights are EHEIM Led
Filter: Aquaball 130 (typ 2402)
i have : deponitmix proffessional 9 in 1 multimineral on the bottom(spreaded)
and daily Flora grow Carbo Co2 Alternative (3squirts)
i changed the light from 12:00 to 20:00
plants:
sagittaria-platyphylla
ceratophyllum-submersum (the ones that are turning brown)
limnophila-sessiliflora-ambulia (the ones that are turning brown)
vallisneria-spiralis( a bit brown but i heard thats normal)
echinodorus-martii-major ( a bit brown)

 

[Hendre]

Hornwort turning brown... That's new

How long has the tank been running with the plants? And how long ago did you start using carbon?

Liquid carbon is known to cause melt in vallisneria when initially used too