Worried 1st time grower.

Hello all, this is my 1st ever crop, and I'm a bit worried about it.
This started last week and slowly seems to be getting worse. The bottom leaves are yellowing, starting with the big fan leaves, but now some of the smaller leaves have started to yellow. Some of the leaves have brown spots.

A little info...

Day 34 flower.
Bio-Grow 1ml, Bio-bloom 3ml in 1 litre in rain water.
BioBizz All mix soil.
250w HPS.
3 gallon pot.

Any advice would be great. Many thanks.

That looks like N deff. to me. My plants will look like that if i use my recepe without the N stuff

also, you are getting not too far from harvest so the lower leaves are being depleted by the plant. natural process - nice plant

Strange, I've been following the bio-bizz chart for nutes.

Po boy said:

also, you are getting not too far from harvest so the lower leaves are being depleted by the plant. natural process - nice plant

Click to expand...

Thanks. I read somewhere it could be as I'm getting close to harvest and it's the natural process.

I'm groing again for the first time in years and I am having the same issue with my BC Kush plant. I look up forums everyday pin point why she is yellowing and its the reason is always N, Mg, or the stage of flowering it is in. Like Po Boy said, the plant is using the rest of its N so don't try to feed it more or it will think it needs to Grow taller. Let that girl do her thing and dont try to over correct. You only have a few weeks till you're yanking her anyhow! Good job

It's true that fan leaves will yellow as a part of the last cyclus of the plant's life, but the longer you can keep them on the more solar panels your plant will have on it to grow bud. So sometimes adding a bit of N can help this.