Hello to All !!! I am an old Pro mix and out door grower. I am growing in a grodan type system. So clone to 1" , to 4" to 6 or 8" slab.
I have had this problem start after about 2 year of this method and about 6 months ago it started.
I have a clean block facility with food grade plastic for walls , metal and pvc tables. Basically nothing that wood burn like drywall ( anywhere ).
I am growing about 25 different strains.From gorilla glue to diesel, seeds from online to start from Europe. I am having the problem in two different rooms from mothers to bloom. Although the new seeds seemed to take about 4 weeks and maybe are just starting to get effected. So it seem to hit anywhere from 2 weeks to the end of bloom. They start to finish in grodan. The plant bud out on the table 3 to 4 feet tall.It is actually Rockwool. The water temp of nutrients are 60 to 70 degrees at feeding time. I flood the tables anywhere from once a day to every 3 days for mothers and clones.. The roots are white and health even at the end when you cut the bags open to look.I mixed my own nutrient from bulk 6 pack until I got the problem ,at which point I went to DNF premixed with growth additive from DNF and in bloom I added DNF diamond , bloom stacker and DNF Bloom fortifier.My EC is 400 for cuttings/seeds 800 for veg and 1100 for bloom.I ph digitally to 5.8 in veg and 5.5 in bloom every time. Also use air stones in any unused or standing food reservoirs. ph is tested every day.I have buffer and calibrate my equipment every three days.Fresh food is mixed every day as needed.The tables are cleaned with bleach and purged with water every two crops.I am running HID 1000w (3 per 5 by 10 table ) staggered metal halite and high pressure sodium alternating between the bloom tables evenly every 3 feet is the opposite kind for fully blended light. Mothers are under HID and kind LED lights in different areas. cuttings are under t-5 and t-8s. The bulbs are anywhere from 1 month to a year old. The light to canopy is 2 to 3 feet .There are dehums every 200 sq ft and are all set to 50% and emptied twice a day every day. The rooms all have ductless AC and clones are 78 and bloom is 76. I use air scrubbers and do not pipe in outside air. ( I have grown for over 30 years without full time fresh air brought in) The night temp drops about 5 degrees in all rooms.There are fans every 60 sq ft with scrubbers every 400 sq ft then split and returned. Each room keeps its own air. No exchange other then workers entering and exiting the rooms three times a day each about an hour in the room with the door open. I thought the problem was water but I have tried 5 different water sources. One city water and 3 were different wells. One was desalinated water. I tried all the different types for 3 weeks to see if the plants got healthier.Mostly hard water.Some plants have air on them but only with moving fans some do not , only fans in the room. The ppm of the waters ranges from 100 to 400 depending on where I got it. Except the desalinated was 0 ppm.One water did go through a water softener but seemed to make no difference. There are no visible pests. I have grown though mites and gnats and so on over the years but have never had anything at the new facility. The last three weeks I have tried rust spray from the hydroponic store once every three days but it actually seemed to make it worse in bloom room. The end product is very nice but quality and yields have dropped. I am attaching photos of different rooms and different stages and one of the buds at 7 weeks.
Thank you for taking the time to read through this and I would appreciate any help at all !!!!!
I have had this problem start after about 2 year of this method and about 6 months ago it started.
I have a clean block facility with food grade plastic for walls , metal and pvc tables. Basically nothing that wood burn like drywall ( anywhere ).
I am growing about 25 different strains.From gorilla glue to diesel, seeds from online to start from Europe. I am having the problem in two different rooms from mothers to bloom. Although the new seeds seemed to take about 4 weeks and maybe are just starting to get effected. So it seem to hit anywhere from 2 weeks to the end of bloom. They start to finish in grodan. The plant bud out on the table 3 to 4 feet tall.It is actually Rockwool. The water temp of nutrients are 60 to 70 degrees at feeding time. I flood the tables anywhere from once a day to every 3 days for mothers and clones.. The roots are white and health even at the end when you cut the bags open to look.I mixed my own nutrient from bulk 6 pack until I got the problem ,at which point I went to DNF premixed with growth additive from DNF and in bloom I added DNF diamond , bloom stacker and DNF Bloom fortifier.My EC is 400 for cuttings/seeds 800 for veg and 1100 for bloom.I ph digitally to 5.8 in veg and 5.5 in bloom every time. Also use air stones in any unused or standing food reservoirs. ph is tested every day.I have buffer and calibrate my equipment every three days.Fresh food is mixed every day as needed.The tables are cleaned with bleach and purged with water every two crops.I am running HID 1000w (3 per 5 by 10 table ) staggered metal halite and high pressure sodium alternating between the bloom tables evenly every 3 feet is the opposite kind for fully blended light. Mothers are under HID and kind LED lights in different areas. cuttings are under t-5 and t-8s. The bulbs are anywhere from 1 month to a year old. The light to canopy is 2 to 3 feet .There are dehums every 200 sq ft and are all set to 50% and emptied twice a day every day. The rooms all have ductless AC and clones are 78 and bloom is 76. I use air scrubbers and do not pipe in outside air. ( I have grown for over 30 years without full time fresh air brought in) The night temp drops about 5 degrees in all rooms.There are fans every 60 sq ft with scrubbers every 400 sq ft then split and returned. Each room keeps its own air. No exchange other then workers entering and exiting the rooms three times a day each about an hour in the room with the door open. I thought the problem was water but I have tried 5 different water sources. One city water and 3 were different wells. One was desalinated water. I tried all the different types for 3 weeks to see if the plants got healthier.Mostly hard water.Some plants have air on them but only with moving fans some do not , only fans in the room. The ppm of the waters ranges from 100 to 400 depending on where I got it. Except the desalinated was 0 ppm.One water did go through a water softener but seemed to make no difference. There are no visible pests. I have grown though mites and gnats and so on over the years but have never had anything at the new facility. The last three weeks I have tried rust spray from the hydroponic store once every three days but it actually seemed to make it worse in bloom room. The end product is very nice but quality and yields have dropped. I am attaching photos of different rooms and different stages and one of the buds at 7 weeks.
Thank you for taking the time to read through this and I would appreciate any help at all !!!!!
