Black Marks On My Plants

[fatelerror89]

i have some black marks on my plants and wounder if someone could help me ?
 
I have t5 28 watt bulbs and have the light on 6-8 hours a day and feeding them jbl Ferropol weekly and when doing water changes 
 

 

[SO19Firearms]

Likely a nutrient deficiency if you're only dosing ferropol weekly (daily would be better) but I'd also say they look to be black on the way to "clear" which would mean a lack of CO2

IMO

 

[fatelerror89]

how can i improve CO2 ? 
 
i try daily feed instead

 

[SO19Firearms]

Options -

Dose liquid Carbon / Inject CO2 Gas / Reduce lighting / Improve flow (if you already inject or dose liquid)

 

[fatelerror89]

i have to look into getting  CO2 gas set up 

 

[fatelerror89]

is CO2 easy to set up ?

 

[SO19Firearms]

Yes, there's some Pinned topics in the CO2 section to guide you.

 

[SLIM]

I would suggest you do ALOT of research into CO2 before diving in as CO2 can cause more problems than solve if its not done right.
However if done correctly you can get astonishing results.

 

[fatelerror89]

i look into it but only want CO2 if i really need it.
 
Its annoying my plants are getting mark leafs and then getting holes in them it could not be due not enough lighting could it ?

 

[SO19Firearms]

i look into it but only want CO2 if i really need it.
 
Its annoying my plants are getting mark leafs and then getting holes in them it could not be due not enough lighting could it ?

Too much light.