Sick Plant?? Photos

[christen23]

HYDROPONICS:

What STRAIN are you growing? Grapefriut Gravity
What was the establishing technique? (Were the seed or clone?) Clone
What is the age of your plants? 17 days flowering
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in? flowering
What Technique are you using? ebb and flow
What substrate/medium are you using?(Hydroton, RockWool etc.) rockwoll
What is the Nutrient temperature? cooler than normal
What Nutrient's are you using? dutch master gold flower a+b, sweet, hydroguard
What is the TDS/EC/PPM you are using?
What is the pH of the "Tank"? was at 7 now is between 5.5-6
Are you sure your calibration is correct on your equiptment? yes
When was your last watering? 9:00 am
When was your last feeding change? (ie. grow-bloom-micro-additional) 3/14
What size bulb are you using? 150w hps + 3 cfl 40 W
What is the distance to the canopy? 6-8"
What is your RH Factor?
What is the canopy temperature? 75*
What is the Day/Night Temp? (Include flucutaion range)day 72-77 night 65-70
What is the current Air Flow? (cfm etc.) none
Is the fan blowing directly at plants?
Is your water HARD or SOFT? well water
Has plant been recently pruned, cloned off of or pinched no
Have any pest chemicals been used? If so, What and When?
Are plant's infected with pest's just alge on the top of the cubes and powder mildew

 

[christen23]

these are some of the other plants with the sick one...

Any suggestions are greatly appericated, as well as how to get rid of the alge on top f the rockwoll cube and the powdery mildey as well as the problem with the sickley looking plant..
thanks POE.

 

[Weedhound]

How long was the ph of the tank at 7?

 

[christen23]

for the first 12 days of flowering... until i realized that it needed to be lowered.. i went and bought ph down from altgarden.com and now its between 5 and 6.

Do you think that having the ph at 7 would do that or do you think there is other problems?

 

[libby]

now the ph ls rlght, glve lt 48hrs and see how lt goes

 

[christen23]

what would you do about the green alge and the powdery mildew??

 

[Weedhound]

not sure where you at (US or Europe) but for powdery mildew I use Serenade spray. Algae will die off with lack of light.....I cover my medium loosely to prevent it myself.

Higher humidity levels will contribute to mold and funguses. They love warm and damp. I try to keep my room humidity below 40% at all times and have never had the mildew issue.

good luck

 

[christen23]

Im in the upper midwest, the humidy normally stays between 38-45 but when i got the clones they already had alge and mildew on them so i have been doing everything to figure out how to get rid of both,..

 

[HeadyPete]

7 is too high and if you dropped the ph down all at once you can expect more issues to surface...plants do not like big swings in ph. You should have brought it down very gradually over days....

PM is caused by low temps and high humidity. You must correct those to get rid of PM or it will come back.