Nute switch, etc.

So my plants about 18-20" now and, based upon what I've read here, I'm going to being 12/12 to induce flowering (strain is purple kush x northern lights). My first question is this: should I switch to a blooming nutrient mix right away or keep using the growth one for a while? Also, my top leaves look very healthy, but the very bottom two (first two rounded leaves) have wilted and died, and there are a very few small kind of wilted (brownish green about half the size of a lady bug) spots on a few of the lower leaves. Any diagnosis without pictures? I will try to post some, but I'm not able right now. Overall I'd say the plant looks very healthy, but I don't want these few little blemishes to turn into a real problem. Right now I'm giving half strength Pure Blend Metabolic Growth Formula 1-.5-1. Should I boost it to full strength or is it a moot point because I should be switching to bloom now anyway? Help is appreciated, thanks.

Hi BOB..

Everything sounds normal.. I would definitley start with a diluted nutrient formula.. like you suggested.. 1/2 strength.

Top growth is very important and relevant.... vigorous new growth is usually a sign of a healthy problem free plant...

It is vital that you PH your water in order to feeed your plant properly..

cheers

I look forward to seeing the pictures

if you go to the general hydroponics web site. you can download an adobe file with a feeding chart for each stage, including a lighting schedule. It is excellent. And everything Garden Knowm said.

i completely agree with everything Garden_Knowm said. the only thing i would add is - if you want you can continue with the veg nutes for the first week or two after changing to 12/12 if you want to maximize your growth before flowering. and then switch to greatly reduced strength flowering nutes.

psyclone said:

if you go to the general hydroponics web site. you can download an adobe file with a feeding chart for each stage, including a lighting schedule. It is excellent. And everything Garden Knowm said.

Click to expand...

Here is the link:
GENERAL HYDROPONICS

The little round leaves should drop. Is normal and right.

psyclone said:

if you go to the general hydroponics web site. you can download an adobe file with a feeding chart for each stage, including a lighting schedule. It is excellent. And everything Garden Knowm said.

Click to expand...

Hello, can you post the link for the web site. Thanks