Quote Originally Posted by begbie5
Your Equipment:
.1) Type and wattage of lights - 600 HPS
.2) Distance from tops? 12inch
.3) Reflector type? (cool tube set-up)
Figured it must be a cool tube. What's your current lighting schedule?

Quote Originally Posted by begbie5
Your nutrients and water:
10) Source of water? tap, What's it's ph before adjusting? ph9
11) Method of checking water ph. (GHE concentrate test indicator)
12) Method of adjusting water ph. (PH down)
Ouch. Mine's 8.0 ph out of the tap, I use phDown too. What ph are you adjusting the water to?

Quote Originally Posted by begbie5
13) Specific brand and N-P-K ratio for each bottle. plagron alga-grow 4ml/1L
14) How often are you watering between feedings, and how much per watering? every 2 days, 400ml
Is this the stuff...?: Plagron Alga-Grow - £6.95 : Gavsgrow, Organic and Hydroponic Garden Supplies
Usage: Dilute 1-2 ml with 1 litre of water. Water the plants with this dilution once a week.
N:P:K - 4.0:6.0:8.0 - A flowering formula. Sort of. Shitloads of potassium, possibly screwing with your ph.


Quote Originally Posted by begbie5
15) Any additives or tea's? (not yet)
A little info about teas: Compost tea myths...
Rusty Trichome Reviewed by Rusty Trichome on . black spot, shadow Hi to everybody My name is Dan i have a problem with my 3 week old plants. I grow them under 600hps, 12inch from a lamp. I had a small deficiency of N few days ago, but that problem was sorted. Ph of soil is 7, water between 6-7 (do my best to reach 6.5). there was a problem with humidity so started spraying leaves with water for a night. I did it every night and started 3 days ago. I sprayed the well with a water. Today morning one plant got some black shadows/spots on bottom leaves. Rating: 5