Hello,
I have two plants in DWC that both have various signs of issues.
Both plants are about week 3 veg, in 74-75° tents, with 63-65% humidity (.8-.9 VPD), with about 28-32DL| 355-400ppfd.
I use highly filtered water, but not RO – about 200ppm in the water. Each res stays around 5.8-6.1ph and I haven't had to chase either of their PH's all grow. Both at 1.5-1.7 EC – feeding week 3 normal strength on the GH trio feed chart. I also add in SLF-100, orca, and 2-3ml/gal cal mag.
Both have healthy looking roots, not alot of roots, but they're starting to touch down.
The netpots are filled with 1:1:1 coco, perlite, and earth worm casting, which helped me tremendously with getting through the seedling stage, first grow trying this. I top water, with PH'ed water every 2-3 days to try to keep roots growing into the res. I did top water, with nutrients for the first 2 weeks before they went into buckets, where I had no signs of deficiencies.
by Ok-Statement3942
2 Comments
Whats your ph? Looks like it’s affecting bottom leaves first. Which may be nutrient lockout from ph imbalance. I shoot for 5.8-6.2. Also,have you addeded cal mag? In hydro alot of nutrient problems arise from too low ph or too high. Also check your water temperature. 68-72 I found is good range. Over 80 degrees increases bad bacteria
Below 60 degrees, slows nutrient uptake as well.
In hydro water temperature is critical
Calibrated ph meter? You sure your water is not stripped of calcium / magnesium?