Deficiency or lack of light

Hi! I need some help with this one. I’m growing in a 2x4 tent with a vivosun “600” watt led that pulls 270 watts from the wall. 5 gallon fabric pots with ffof soil. Temps are 73 at night and up to 81 during the day but mostly stays at 78 during the day. Humidity ranges from 45 with the lights on to 60 with the lights off. Vegged for one month flipped the lights on 5/23 to 12/12. I think the plants are done stretching for the most part. A lot of the lower leaves are turning yellow and some have some rust spots. I’ve fed them once on 6/7 with general hydroponics flora micro and bloom 3ml in 3 gallons of water. On 6/11 I watered with plain ph water to 6.5. I was wondering if it’s maybe a P or K deficiency or my light is too weak to reach the lower leaves. Either today or tomorrow I wanted to water with gh micro 6.5 ml per gallon and bloom 10 ml per gallon. Any input would be appreciated!

It’s the plant on the left.

Look hungry to me. You realize that 3ml In 3 gallons is 1ml per gallon. That’s not enough.

when it’s short on nutrients it pulls them from the leaves.

I realize it’s not a lot I just didn’t want to make the classic mistake of over feeding.

Of course not I vote you bump it up. It’s flowering and will need more nutrients.

Ok cool. Do you think 6.5 ml of micro and 10 ml of bloom per gallon will be good that’s 2/3 the recommended dose?

When I used that stuff I used Lucas formula. I saw a post the other day about using all three parts. I’ve switched so I’m not the best person to ask for that.

lucas is just 1 part micro 2 parts bloom. Finding the right dosage is key.

On 6/14 and 6/18 I fed 15ml of micro and 30 ml of bloom in 3 gallons of water ph 6.5 ppm 690. Not really seeing improvement. My other plant is looking good. I’m scared she’s gonna die before I have a chance to harvest. Tomorrow will be 4 weeks since I flipped to 12/12. What am I missing?? Should I do the full recommended dose of micro and bloom which is 10ml of micro and 15ml of bloom per gallon?

what strain and how many weeks does the strain usually run?

It looks a little better to me. Yellowing on a few bottom leaves but less spotting.

I would not worry it wont make it. I think its doing just fine.

I don’t like the downward claw on your leaves in the last pic. Not sure what that could be other than over watering or possible nitrogen toxicity.

I’m going through the same thing with one my plants right now. I chose to feed light and now I’m fighting that battle. Remember it’s not a sprint. Continue to feed and it will get better. Watch for signs you’re feeding too much. I wouldn’t bump it up on dosage.

The micro has N. 5-0-1

unfortunately I’m not sure what strain it is I got some seeds from my friend. I’m pretty sure I’m not overwatering. In fact I may be under watering sometimes. I wait for the leaves to droop and I’ve been weighing the pots. You think I should cut back on the micro?

Markus1017 said:

You think I should cut back on the micro?

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Slightly. Just enough to get rid of that minor N toxicity.

I’m using 5ml of micro per gallon should I drop it down to like 3 or cut it in half to 2.5?

These fell off today.