cottonfarmer
Active Member
Mechanicals: room-8x10x8; lights-2 1000w MH bulbs in cool tubes attached to convertible ballasts; ventilation-8 CAP exhaust fan 745 CFM attached to 8x24 Phresh filter --- goes through the light tubes and out the roof, 1 16 oscillator across the table from the end, 8 floor fan rotated towards the ceiling and a 10 fan on a shelf near the ceiling to stir the top; 14k BTU AC dual hose; 4x8 flood table with 70 gal reservoir (fill to 50 to leave room for adjustments) with plants in 4x4 rockwool blocks with block covers; 5 gal cool mist digital humidifier; movable reflective walls.
Operation: presently at 18/6 on the lights and AC with the ventilation running 24/7 --- the exhaust fan is attached to a Titus controller to slow down during dark time; the reservoir runs a constant 65-66 F with no assistance in heating and cooling --- I use a submersible pump with an attached aerator to stir and oxygenate; flooding the table once a day to 1 which takes approx 10 minutes and 20 minutes to drain (keeps me at/under the 30 minute rule) --- I start the reservoir with 16 ounces of 3% H2O2 (75 PPM by volume) and add 2 ounces each day. I check the pH prior to flooding and adjust if necessary to 5.8-6.2. I check the PPMs before and after feeding to get a feel for what the plants are taking --- currently running at 700 PPM up from a recent start of 600. I rotate the plants on their axis every other day and re-position shorter plants to the center of the table once a week. Room temps are keep at 70-73 F during lights on and drops to 64-66 lights out --- RH is keep at 40-55%.
The Beginning: started with 32 clones that were fully rooted with roots extending from their cubes (rockwool) from a supplier that were grown under MH lights; allowed them to become accustomed to the room with the lights at max (about 5 feet) while dipping cubes in plain pH adjusted de-chlorinated tap water (265 PPM) and misting with the same for 5 days; transplanted to 4x4 rockwool prepped by soaking in 4.7 pH water for 12 hours followed by soaking another 12 hours in 5.7 pH Hygrozyme solution at 2ml/gal. I placed 1 tsp of Rooters in the planting hole of rockwool blocks before inserting the clones. Reservoir was prepped with de-chlorinated water and Advanced Horticultures Yellow Bottle line sometimes called Bloom, Hygrozyme, Nutriboost and Rooters Myco nutrients to 700 PPMs. Lights were set to 3.5 feet and began a feeding schedule of once every other day --- chosen based on previous grows and measurements.
The Problem and Actions: after 3 days on schedule the plants began to droop with some leaf damage which appeared to be nutrient burn and noticeable ridges between the veins ; dumped res and setup for flushing using pHed water with Clearex at 5ml/gal; 1st flush was by hand pouring 2 liters slowly through each block; took PPMs before and after; continued flushing by flooding until the PPMs were no longer rising; dumped res and setup a pHed solution using Nutriboost at .25ml/gal and fed this twice a day for two days sorta like flushing with Nutriboost; dumped res and setup a pHed solution of Nutriboost at .25ml/gal, Hygrozyme at 5ml/gal, Roots (Bloom) at 1.5ml/gal, H2O2 at 9ml/gal, Euro A at 1ml/gal and Euro B at .5ml/gal all to 420 PPMs and fed once a day for 3 days with no sign of improvement. Have recently added A&B to raise the PPMs to 600 and lights are at 2 feet. Ive also misted the plants a couple of times with Epsom salt solution at ¼ tsp/gal with DM Penetrator per label.
N P Ks: Euro A: 9-0-7; Euro B: 2.7-2.1-1.8; Roots 0-0-0; Hygrozyme: ?; Nutriboost: 0-0-0
This is the second crop at this location --- the first grow performed the same while using much higher starting PPMs (900) --- the table produced nice quality but only a pound and half with droopy leaves and red stems all the way through. Ive had local advisors look at the table and have yet to find anyone who can present an answer. At first I thought it might be the altitude (only 2400 feet) due to a similar experience in Big Bear --- but a rinky-dink check of the CO2 says were OK here. That only leaves the water --- Ive helped to manage 8 other grows with similar setups using tap water as high as 400 PPMs that did not exhibit these problems however the calcium content was not tested.
Whats wrong?
Operation: presently at 18/6 on the lights and AC with the ventilation running 24/7 --- the exhaust fan is attached to a Titus controller to slow down during dark time; the reservoir runs a constant 65-66 F with no assistance in heating and cooling --- I use a submersible pump with an attached aerator to stir and oxygenate; flooding the table once a day to 1 which takes approx 10 minutes and 20 minutes to drain (keeps me at/under the 30 minute rule) --- I start the reservoir with 16 ounces of 3% H2O2 (75 PPM by volume) and add 2 ounces each day. I check the pH prior to flooding and adjust if necessary to 5.8-6.2. I check the PPMs before and after feeding to get a feel for what the plants are taking --- currently running at 700 PPM up from a recent start of 600. I rotate the plants on their axis every other day and re-position shorter plants to the center of the table once a week. Room temps are keep at 70-73 F during lights on and drops to 64-66 lights out --- RH is keep at 40-55%.
The Beginning: started with 32 clones that were fully rooted with roots extending from their cubes (rockwool) from a supplier that were grown under MH lights; allowed them to become accustomed to the room with the lights at max (about 5 feet) while dipping cubes in plain pH adjusted de-chlorinated tap water (265 PPM) and misting with the same for 5 days; transplanted to 4x4 rockwool prepped by soaking in 4.7 pH water for 12 hours followed by soaking another 12 hours in 5.7 pH Hygrozyme solution at 2ml/gal. I placed 1 tsp of Rooters in the planting hole of rockwool blocks before inserting the clones. Reservoir was prepped with de-chlorinated water and Advanced Horticultures Yellow Bottle line sometimes called Bloom, Hygrozyme, Nutriboost and Rooters Myco nutrients to 700 PPMs. Lights were set to 3.5 feet and began a feeding schedule of once every other day --- chosen based on previous grows and measurements.
The Problem and Actions: after 3 days on schedule the plants began to droop with some leaf damage which appeared to be nutrient burn and noticeable ridges between the veins ; dumped res and setup for flushing using pHed water with Clearex at 5ml/gal; 1st flush was by hand pouring 2 liters slowly through each block; took PPMs before and after; continued flushing by flooding until the PPMs were no longer rising; dumped res and setup a pHed solution using Nutriboost at .25ml/gal and fed this twice a day for two days sorta like flushing with Nutriboost; dumped res and setup a pHed solution of Nutriboost at .25ml/gal, Hygrozyme at 5ml/gal, Roots (Bloom) at 1.5ml/gal, H2O2 at 9ml/gal, Euro A at 1ml/gal and Euro B at .5ml/gal all to 420 PPMs and fed once a day for 3 days with no sign of improvement. Have recently added A&B to raise the PPMs to 600 and lights are at 2 feet. Ive also misted the plants a couple of times with Epsom salt solution at ¼ tsp/gal with DM Penetrator per label.
N P Ks: Euro A: 9-0-7; Euro B: 2.7-2.1-1.8; Roots 0-0-0; Hygrozyme: ?; Nutriboost: 0-0-0
This is the second crop at this location --- the first grow performed the same while using much higher starting PPMs (900) --- the table produced nice quality but only a pound and half with droopy leaves and red stems all the way through. Ive had local advisors look at the table and have yet to find anyone who can present an answer. At first I thought it might be the altitude (only 2400 feet) due to a similar experience in Big Bear --- but a rinky-dink check of the CO2 says were OK here. That only leaves the water --- Ive helped to manage 8 other grows with similar setups using tap water as high as 400 PPMs that did not exhibit these problems however the calcium content was not tested.
Whats wrong?
I'll be back....
