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What is causing this yellowing?

bob65

bob65

Sorry if it is a noob question, or has been answered elsewhere before.
 
I have started growing some plants in a grow tent (is winter here) and over the last couple of days have noticed that some of the lower leaves of one type have started going yellow.
 
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I am not sure what is causing it.
 
I water them 2 or 3 times a week and feed them half strength Charlie Carp once a week.
 
Am I doing something wrong? What should I do to fix it?
 
All input appreciated.
 
bob65 said:
Half strength fish juice once a week (Charlie Carp is the brand)
 
Water every 2 or 3 days.
Click to expand...
 
I see awful lot of perlite in your soil mix and What is the npk value in that Charlie carp stuff?
 
NPK doesn't matter so much in the fish juice. I'm not familiar with that brand, but your plant looks really good, except that it's missing some kind of micro, methinks. Is that just fish juice, it does it have seaweed? If not, can you get your hands on seaweed extract?
 
Also, you can feed full strength, at this stage.  
 
You always use all that you mix, right? As in, you don't store any of the mix after use?
 
Thanks for the replies.
 
 
Charlie Carp must just be an Australian thing (i just checked the label and it says Aust. owned Aust made)
 
It doesn't seem to have any seaweed in it. I do mix a fresh batch each time I use it.
 
I will start feeding it full strength from now on.   :thumbsup:
 
 
Seaweed extract, I will go to the store and get some today.
 
Not knowing yet what is available and what I am getting, should I be mixing this in with the fish juice or applying it separately?
 
 
The soil mix is 50% perlite, 35% soil, 15% peat.
 
 
If it does matter at all, the NPK of Charlie Carp according to the label is 10-1-6
 
bob65 said:
Not knowing yet what is available and what I am getting, should I be mixing this in with the fish juice or applying it separately?
 
 
The soil mix is 50% perlite, 35% soil, 15% peat.
 
 
If it does matter at all, the NPK of Charlie Carp according to the label is 10-1-6
Click to expand...
 
It doesn't matter for me.  If you've got at least 1-1-1 with an organic fert like that, you're good to go.
 
Yes, mix the seaweed with the fish.  Just make sure to use it all in one shot.
 
Also, that's a lot of perlite, and soil really has no place in a container.  Just a suggestion...  But when you pot up to the next size, consider a 75/25 peat to perlite ratio for the rest of the container.  Don't worry about what you've already got in there - let that be.  Also, suggest that you mix in about 5% compost to the peat/perlite mix, if you can.  Worm castings are best, try not to do manures. (unless it's rabbit/goat/sheep)
 
Suggestions noted. Will take it on board and go with it.
 
Being the first time I have tried anything like this it is more of an experiment to see if I can get it right. I was thinking that it would be easier for the plant to get nuts with soil in the pot than to rely on what I was adding, if that makes sense.
 
I have been to the store and bought some fish juice with added seaweed and will use that from now on.
 
Wait...  When you say "soil", are we talking like terra firma, or is it from a bag? 
 
"Soil" is a very specific term.  It's an earth-based aggregate.  Anything else is just some kind of mix, or other amendment.
 
Ok, that is a better place to be in.  Still a bit heavy on the perlite for my liking, but I would still let this ride until we need to pot up...
 
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