Growth spurt done, time for a change?

I have my 5 plants under a 400 HPS on a 12-34-12 better bloom nutrient and they're about 3 1/2 weeks into 12/12, and the stretch is mostly finished now. Just hoping for some recommendations on NPK ratio's for finishing flowering, and possibly brands, +rep, cheers!

Your 12-34-12 is probably fine for the later stages though during your stretch, you probably could have used more nitrogen than that formula is supplying.

I had a veg formula with a higher N but switched to the 12-32-12 as soon as 12/12 was induced. should I switch again?

stealthgrow101 said:

I had a veg formula with a higher N but switched to the 12-32-12 as soon as 12/12 was induced. should I switch again?

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What is the NPK value of your veg formula?

17-15-17 was the one I used in veg before switching onto the 12-32-12

Here is a pic of them today as well...

stealthgrow101 said:

17-15-17 was the one I used in veg before switching onto the 12-32-12

Click to expand...

If it were me, I might go 2 parts veg formula and 1 part flower formula during the first few weeks (maybe even half and half). But that would also be dependent on how the lower leaves look. If you don't have yellowing lower leaves, you may be fine with your 12-32-12 during all of flower.