Nutrients for flower strech

[Ramon]

hello,
when plant enter tue first few weeks of the flower strech, should I water with grow or bloom nutrients?
my questions is when should I change nutrients from grow to bloom?

 

[OldManGrower]

When flowers begin to appear, switch to bloom.

 

[3Berries]

Here's what I experience. I usually start with the flower nutes the last watering in veg. The defoliate a bit the last week of veg. Then switch to the 12/12 but the stretch really uses up some mineral nutes, calcium, magnesium and potassium.

In the past I've always struggled with pH at this point but that was not a problem this time, new type soil was and It showed a deficiency in calcium and potassium after the stretch. Using ProMix BX and i like it.

I have an auto too that when it when into stretch (20/4 light cycle) showed the same, with the yellowing top leaves but also had really hollow stems. I started adding more Ca on top of the soil using both CAN and CaCl @ 1300 ppm though spaced out a week. It's growling like crazy and one plant filling up the tent. But the stems are much stronger, still a little yellow on top. The auto is in FF Ocean Forest with added limestone and perlite.

 

[dilvish]

What kind of nutrients are you using?? A few pictures of the plant would help too. But yes, as above you should start bloom nutrients when flowers/pistils start to appear.

 

[changeofpace2014]

It has been my understanding if one feeds with grow during the first week or so of 12/12, it can minimize the stretch. When height is an issue every inch restricted is a win..

 

[Ramon]

I’m using botanicare grow and bloom.
let me try to upload a picture

 

[3Berries]

I think my K problem is the Miracle Grow nutes. It's way down on K compared to other cannabis specific nutes. I'll see if using the langbeinite which is 2KSO4 and MgSO4 instead of just Epsom salt does the trick.