benthegrate
Member
Hey, happy people! Forgive this newb...I've spent the past 48 hours reading everything I can on this forum. There's so much information that I've diagnosed my seedlings with 16 different problems...probably none of which are accurate. Ha ha ha... (btw I am a very seasoned gardener, but totally new to both cannabis and hydroponics.)
I have a tent setup and have sprouted four feminized seeds, White Widow, Northern Lights, Hawaiian Snow, and The Ultimate. I am growing these to take clones for both indoor and outdoor growing.
Seeds in wet paper towels sprouted in 24 hours (with the exception of Hawaiian Snow, which needed more heat from the mat to sprout and was out in 48 hours). Then they were moved into Rockwool cubes, which were prepared by a 90 minute soak in pH 5.0 (manufacturer now recommends 30 minute soak...no more overnight soaks) then flushed well with weak nutrient solution. I used vinegar to drop the pH for the soaking liquid. (Didn't have pH down, and didn't realize the importance of not using vinegar until later.) The nutrient solution is General Hydroponics Advance Nutrient System, at their strength recommended for seedlings, 1/4 tsp of each of 3 solutions in a gallon of water. Then I lowered the pH to 5.5 with vinegar and brought to room temp. The water was bottled spring water, which I later learned I shouldn't use because of high ppm levels.
Nute-soaked Rockwool cubes were put into a wick-system setup, nestled in vermiculite into which the wick was buried. The whole thing went into my tent with a 400watt HPS about 2-3 feet above the seedlings, and I left for Portland for a week.
When I came back, my babies were pretty fried. Yellow/brown on the leaf tips. The temp of the seedling area was in the high 80s/low 90s.
Not knowing whether the discoloration was due to heat, too much nute, too little nute, too warm nute solution, or whether the fact that I had used vinegar to lower the pH...
I immediately flushed with distilled water. I tossed the nute solution and made up another solution with "drinking water" which is RO, reduced the nute level by 1/4th (by making a gallon at the recommended level of 1/4 tsp of each solution in a gallon, then discarding 1/4 of the solution and adding more water), adjusted to 5.5ph with genuine pH down, brought to room temp, and returned them to the tent. I raised the light so that the temp at seedling level is 75-79 degrees and added a fan.
There are some new leaves coming out that look healthy, but the largest leaf set is still pretty narsty. Pics:
Hawaiian Snow
Northern Lights
The Ultimate
White Widow
Anyone have any seasoned insight about what might have happened, or any suggestions for what I might do to help these babies recover?
I have a tent setup and have sprouted four feminized seeds, White Widow, Northern Lights, Hawaiian Snow, and The Ultimate. I am growing these to take clones for both indoor and outdoor growing.
Seeds in wet paper towels sprouted in 24 hours (with the exception of Hawaiian Snow, which needed more heat from the mat to sprout and was out in 48 hours). Then they were moved into Rockwool cubes, which were prepared by a 90 minute soak in pH 5.0 (manufacturer now recommends 30 minute soak...no more overnight soaks) then flushed well with weak nutrient solution. I used vinegar to drop the pH for the soaking liquid. (Didn't have pH down, and didn't realize the importance of not using vinegar until later.) The nutrient solution is General Hydroponics Advance Nutrient System, at their strength recommended for seedlings, 1/4 tsp of each of 3 solutions in a gallon of water. Then I lowered the pH to 5.5 with vinegar and brought to room temp. The water was bottled spring water, which I later learned I shouldn't use because of high ppm levels.
Nute-soaked Rockwool cubes were put into a wick-system setup, nestled in vermiculite into which the wick was buried. The whole thing went into my tent with a 400watt HPS about 2-3 feet above the seedlings, and I left for Portland for a week.
When I came back, my babies were pretty fried. Yellow/brown on the leaf tips. The temp of the seedling area was in the high 80s/low 90s.
Not knowing whether the discoloration was due to heat, too much nute, too little nute, too warm nute solution, or whether the fact that I had used vinegar to lower the pH...
I immediately flushed with distilled water. I tossed the nute solution and made up another solution with "drinking water" which is RO, reduced the nute level by 1/4th (by making a gallon at the recommended level of 1/4 tsp of each solution in a gallon, then discarding 1/4 of the solution and adding more water), adjusted to 5.5ph with genuine pH down, brought to room temp, and returned them to the tent. I raised the light so that the temp at seedling level is 75-79 degrees and added a fan.
There are some new leaves coming out that look healthy, but the largest leaf set is still pretty narsty. Pics:
Hawaiian Snow
Northern Lights
The Ultimate
White Widow
Anyone have any seasoned insight about what might have happened, or any suggestions for what I might do to help these babies recover?
