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DWC - Help needed please!

Tersky : I think the spots from septoria from the link you provided look lighter. My spots are more brown looking. Its an LED light but I guess the effect your speaking about could be the same. I really think I didn't get water anywhere on the leaves though.

gbauto : hahaha, I think you're right. It's the first grow and I somehow don't wanna ruin it. I want to succeed ;) Didn't think an EC that high would be required for DWC: Everywhere I searched they said, as for EC values in DWC; they should be lower than the recommendations on the packaging. When I compare it with the Tripart Chart for flowering. The table in my first post is around 25% lower. Any thoughts?


 
A question regarding general feeding:
I change my reservoir weekly and only top up with RO water daily. This is my PPM for the last week. Measurements were always made after topping up to the same water level.

[TABLE="border: 1, cellpadding: 1, width: 500"]
[TR]
[TD]Day 1: Freshly made solution[/TD]
[TD]830 ppm[/TD]
[/TR]
[TR]
[TD]Day 2[/TD]
[TD]730 ppm[/TD]
[/TR]
[TR]
[TD]Day 3[/TD]
[TD]620 ppm[/TD]
[/TR]
[TR]
[TD]Day 4[/TD]
[TD]550 ppm[/TD]
[/TR]
[TR]
[TD]Day 5[/TD]
[TD]450 ppm[/TD]
[/TR]
[TR]
[TD]Day 6 (Today)[/TD]
[TD]370 ppm[/TD]
[/TR]
[TR]
[TD] [/TD]
[TD] [/TD]
[/TR]
[/TABLE]

First grow, but it looks like they are feeding well.

Question:

1) Should I be topping off with nutrient solution ? If so, how strong?
 
I wouldn't just because it's a bit much work adding more nutes then more pH Up/Down just to maintain a certain ppm. As long as they are growing and still taking up nutrients during the week, they will be fine. I only add water and pH adjustments when needed during the week. It's OK and probably beneficial to keep them just a bit hungry. (I learned that raising tropical fish!) You're doing fine and they can get by on 370 ppm until tomorrow.
 
Thanks UndergroundFarmer

In any case I thought I'd provide an update. Today is the end of Week 5 of flowering. They didn't grow very tall. Right plant seems to be doing better.

When will I know when to start Flora Finalpart(Ripen) and when to flush ? Any advice appreciated.





 
They should produce OK even at that height with all those bud sites. According to the chart, Finalpart is for the last 10-15 days of flower before harvest, so you should add it beginning at week 7.
 
Hi all,

Update today, first day of week 7. Any ideas what those spots could be? They're getting more and more prominent!
Thanks! Thrichomes are all still clear :)



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Thanks UndergroundFarmer . I was following the schedule on the first place, strictly, changing res exactly every week. Wouldn't think the plants would manage to get a deficiency. Also I read, many people don't even give CalMag any more in late flowering. Just sit it out now ? Or make new batch with more CalMag ? Now I have about 0.75mL/L CalMag.
 
I forgot to ask whether that leaf in the picture was up top or in shade. Calcium deficiency causes those spots in leaves getting plenty of light. Also, how widespread is this? If it's only one or two fan leaves toward the bottom showing symptoms, I wouldn't sweat it. I also wondered if you might have sprayed anything on or around the plants within the last week.
 
I thought it was possibly thrips but the shiny spots don't photograph well. I have some leaves on my girls looking a bit like that from old bug bites. Show whatever they are no mercy.
 
I do not put ph down and ph up into the same reservoir. If I put ph down in a reservoir and the ph starts falling I change the reservoir.
 
Been checking the leaves very regularly. Spent 30 mins checking today. Haven't found anything at all. Nothing crawling, no eggs. Although that definitely was an egg/larva.

Also in full bloom, what options do I have? Its all stuff thats gonna contaminate the buds badly. What do you think?
 
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