Is this a cause for concern? Need help

[derek910]

What Strain is it? Blue Dream
Is it Indica, Sativa or Hybrid? What percentages? Hybrid 50% Sativa 50% Indica
How Many Plants? Just 1
Is it in Vegetative or Flowering Stage? Vegetative
If in Vegetative Stage... How Long? Day 21
If in Flowering Stage... How Long?
Indoor or Outdoor? Indoor
Soil or Hydro? Hydro
If Hydro, Reservoir size? 5 gallon
If Hydro, Reservoir Temperature? Unknown
If Hydro, what type of Medium? Clay pellets
If Hydro, what type of Setup? DWC
If Soil... What is in your Mix?
If Soil... What Size Pot?
Size (Wattage) of Light? How Many? 300 Watt LED, 1 light
Is it Air Cooled? Yes
Temperature of Room/Cabinet? Unknown
RH of Room/Cabinet? Unknown
PH of Medium or Reservoir? Reservoir PH is 5.9/6.0
Any Pests? Don't see any
How Often are you Watering? Just maintaining PH in DWC bucket
Type and Strength of Fertilizers used? I'm using Fox Farm and following the feed schedule. I posted a picture I am on week 3 using Big Bloom and Grow Big. Just did a flush on July 23rd with Sledgehammer
Size or Square Footage of Room? 3 foot x 3 foot x 6 foot

Do I need to be worried about the edges yellowing and dying? And what should I do about the white moldy stuff at the base on the rock wool? First time and don't want to screw this up

 

[improvise]

cover rock-wool with clay balls, white stuff grows on constantly wet substrate i don't think it is a worry unless some other member comes in with advice,also this might help ya with leaf symptoms Cannabis Plant and Pest Problem Solver - Pictorial regards

 

[Pennywise]

Hey Derek, welcome to 420. What i see is nutrient burn on the leaf tips. Back off on the strength of your nutes a little. Like improvise said cover the rockwool and the algae should go away.

 

[derek910]

I added a gallon of water to dilute the nutes because I just added them and didn't want to waste what I used. I need one of those ppm testers. Is it normal for the upper leaves to grow better? I'm assuming due to getting all of the light.

 

[derek910]

I finally got a TDS meter and my PPM was 2260 and I'm on week 3. I dumped that water and re-measured everything now my PPM is 956. Is this a good reading for day 24 of vegetative stage?

 

[Mountainman80]

What Strain is it? Blue Dream
Is it Indica, Sativa or Hybrid? What percentages? Hybrid 50% Sativa 50% Indica
How Many Plants? Just 1
Is it in Vegetative or Flowering Stage? Vegetative
If in Vegetative Stage... How Long? Day 21
If in Flowering Stage... How Long?
Indoor or Outdoor? Indoor
Soil or Hydro? Hydro
If Hydro, Reservoir size? 5 gallon
If Hydro, Reservoir Temperature? Unknown
If Hydro, what type of Medium? Clay pellets
If Hydro, what type of Setup? DWC
If Soil... What is in your Mix?
If Soil... What Size Pot?
Size (Wattage) of Light? How Many? 300 Watt LED, 1 light
Is it Air Cooled? Yes
Temperature of Room/Cabinet? Unknown
RH of Room/Cabinet? Unknown
PH of Medium or Reservoir? Reservoir PH is 5.9/6.0
Any Pests? Don't see any
How Often are you Watering? Just maintaining PH in DWC bucket
Type and Strength of Fertilizers used? I'm using Fox Farm and following the feed schedule. I posted a picture I am on week 3 using Big Bloom and Grow Big. Just did a flush on July 23rd with Sledgehammer
Size or Square Footage of Room? 3 foot x 3 foot x 6 foot

Do I need to be worried about the edges yellowing and dying? And what should I do about the white moldy stuff at the base on the rock wool? First time and don't want to screw this up

Those look good. I.don't.no.anything about. Dwc