Problems in Hell. Help

[Ironhead]

New growth bright green tips. PH 5.8 TDS 315 water temp 68.2 F, tent temp 72 F. Humidity 48%.
Using Hydroguard feeding GH Floranova one part nutrient, feed 1 tsp every other day or so? What's going on over or underfeed? Nutritional deficiency ? Thank you

Humidity 48%

 

[namvet25]

I s this a full hydro grow? Try and get your temp up closer to 75 to 80 degrees.

 

[davisgirl]

I’m a noob but I run my DWC ppm higher.

 

[Waira]

-- that ppm is very low, too low,... how much of it is the water's ppm? your actual feed ppm should be nearly twice that unless they have shown to be very nute sensitive...
Symptoms are very early in manifestation, hard to say what defc. this is, but K and Zn can start out like this.... I see possible light stress related edge curling too, how close in the light?

 

[Ironhead]

Still going on getting worse PH 5.6 TDS 315 Humidity 55% temp 75 F. Just did water change did not add any nutrients I'm using GH Floranova one part nutrient added cal-mag and Hydroguard this morning. The light is 2.5' away from plants, CMH 315 watt. TDS was up to 624 before H20 change this morning. Please help

 

[Ironhead]

My TDS is 527 now. It starts out at 258 before I add anything.

 

[Waira]

that's looking like P defc. now, an odd manifestation of it too,... how do the roots look?
...so, the water alone is 258ppm? I think this is part of the problem, with ca-mg added in on top of this,... Too much Ca can mess with P and Mg uptake among others,... If you water is this hard, you'll need to dilute it down with low ppm water, Ro, Di, even self-fill machine water,... then you need to get your base nutes up to 500+ alone, it's been far too weak and now is catching up to you,... Water plus Ca-Mg should be about 150ppm... you base nutes have Ca and Mg already remember!