Low ppm in flower? DWC

[bobert]

Hey guys,

I've been having a little ppm issue with my 5 gal dwc bucket.
The plant is a 16 week bagseed sativa currently on week 4 of flowering.
Running a 400w HPS with lucas, and a 300 gal tetra air pump.
I'm only at 650 ppm @.5 with 130ppm tap water. (4ml micro/8ml bloom)
Every time I try to raise ppm slightly, the p.h drops and ppm's rise the next couple days.
From what the plant is telling me (ppm's/p.h) it seems like 650 is it's 'sweet spot'.

650 sounds too low at 4 weeks, what do you guys think?

 

[GuerrillaRed]

Bump your nutes for flowering. You want 8ml micro/16ml bloom for flowering man. As you get deep into flowering, you may want to bump even higher to 10ml/20ml

How do the plants look?

 

[bobert]

When i raise the nute strength I keep getting signs of overfeeding.(ppms rise and ph drops)

looks healthy to me

 

[RockinRobot]

650ppm sounds about right for that light. I have not found a strain yet I can feed heavier than 1EC without signs of nutrient burn and I run a 600W. Under 1K or with CO2 maybe could go higher.

Listen to the plants they will tell you what they need.

 

[bobert]

Awesome, I appreciate the help.
After doing a run around full strength it just seems weird running only 1/2 strength.

Thanks again