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Add extra Iron with tnc complete ?

eminor

Member
Joined
5 Feb 2021
Messages
71
Location
France
Hello, I use tnc complete fertiliser, I am generally satisfied with it, however the red plants lack a bit of colour, I read that adding iron can amplify the colours of the plants. I have easylife ferro fertiliser, can I add this fertiliser with tnc complete, what is the limit not to be exceeded, I add 2ml per day of tnc complete for 35 litres of real water? thank you.
 

Zeus.

Fertz Calc Meister
Joined
1 Oct 2016
Messages
4,003
Location
Yorkshire,UK
Quote
When iron (Fe) is deficient, plants will produce less chlorophyll in their new shoots. An iron deficiency is therefore easily identified in the shoot tips of fast-growing stem plants. The rich leaf green fades, and the young plant parts assume a yellow to white colour (chlorosis).
unquote

So having Fe in abundance (assuming no other deficiency's) the plants will be a the colour they should be if it is red or green will be plant dependant, adding extra Fe will not make them redder.
To make some plants redder you can eg reduce NO3 levels which initiates a NO3 deficiency which makes some plants redder- but it doesn't mean they are healthier.

The spectrum of your light output can make the tank look better also, much of this is down to what the user likes, but ADA Solar RGB really make the reds pop - seeing is believing.

So picking the right plants and having the right light is the best way to get the reds to pop. If you use a sodium light plants will grow fine but look washed out and pale and reds will be very poor.

So in short, adding extra Fe when Fe is already in abundance will change nothing
 

eminor

Member
Thread starter
Joined
5 Feb 2021
Messages
71
Location
France
Quote
When iron (Fe) is deficient, plants will produce less chlorophyll in their new shoots. An iron deficiency is therefore easily identified in the shoot tips of fast-growing stem plants. The rich leaf green fades, and the young plant parts assume a yellow to white colour (chlorosis).
unquote

So having Fe in abundance (assuming no other deficiency's) the plants will be a the colour they should be if it is red or green will be plant dependant, adding extra Fe will not make them redder.
To make some plants redder you can eg reduce NO3 levels which initiates a NO3 deficiency which makes some plants redder- but it doesn't mean they are healthier.

The spectrum of your light output can make the tank look better also, much of this is down to what the user likes, but ADA Solar RGB really make the reds pop - seeing is believing.

So picking the right plants and having the right light is the best way to get the reds to pop. If you use a sodium light plants will grow fine but look washed out and pale and reds will be very poor.

So in short, adding extra Fe when Fe is already in abundance will change nothing
Thx, always amazing information, new leaves have no deficiency, so I'll stay away from iron. I need rgb light, but i've read that CRI is low with rgb is that true ? my light CRI is 97 thx
 

Zeus.

Fertz Calc Meister
Joined
1 Oct 2016
Messages
4,003
Location
Yorkshire,UK
Its the PAR (Photosynthetically active radiation) is what the plant is interested in, but we are also interested in the Light output and what spectrum is is that gives the plants their colours

If the light has no output in the 600-800nm your plants may be red but you will not see it as there's no output in that spectrum.

Getting the spectrum output of a light helps to work out what colours will show up, manufactures are usually poor at supply this info which is poor IMO


1615062334317.png
 

eminor

Member
Thread starter
Joined
5 Feb 2021
Messages
71
Location
France
Its the PAR (Photosynthetically active radiation) is what the plant is interested in, but we are also interested in the Light output and what spectrum is is that gives the plants their colours

If the light has no output in the 600-800nm your plants may be red but you will not see it as there's no output in that spectrum.

Getting the spectrum output of a light helps to work out what colours will show up, manufactures are usually poor at supply this info which is poor IMO


View attachment 164291
I have those informations, but don't know if it's good, the green looks absolutely amazing under that light
 

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