I've got a 5x5 room with 2 MH 400's ebb and flow with a 20 gal res. Just took some RO water and added AN perfect PH 3 part to the water, which was somewhere in the low 6's after running the tables clean for a day. The perfect PH raised it to closer to 7 (i.e. my vial turned greener than it was). Anyone ever had this issue?
AN Perfect PH... adjusting PH the wrong way???
- Thread starter Spychar
- Start date
iSmokealottaweed
Active Member
Yep Ph down should do the trick. Just keep a eye on it. I prefer not to run their nutes full strength anyways.
Here's a good break down from them:
"All of our products and formulas can be used in exactly the same way in all mediums. Mix the nutrient solution including any supplements that you are using, allow the solution to sit for at least ah hour or two, then adjust the pH to the level ideal for the medium that you are using. When growing in soil adjust the pH to 6.3, in hydro to pH 5.6 and when in coco coir, adjust to 5.8-6.0.
I am including a feeding guideline below.
Feeding Guideline
Don’t start feeding nutrients to rooting clones or seedlings such as the 2 part Sensi A & B (Grow) until they develop 3 or 4 sets of new/true leaves.
Until they develop 3 or 4 sets of new (clones)/true (seedlings) leaves feed them only water. You can foliar spray them with 1/4 strength B-52 (1 mL/liter) until then. You can also add 1/4 strength applications of Piranha, Tarantula and Voodoo Juice, to the water that you will use in the root zone.
Clones seedlings need high levels of moisture in the medium
(80% -85% is good 100% is too much)
They also like a warmer environment in the root zone 70 F – 80 F.
Entering the Vegetative stage, Use the Rooted Clones / Seedlings schedule in the nutrient calculator for the first two weeks of feeding)
Week 1
At 3 or 4 sets of new leaves mix nutrient solution at 300 ppm
Week 2
Mix nutrient solution at 600 ppm
Switch to Vegetative Stage feeding schedule if you are going to vegetate the plants longer than two weeks, the calculator goes up to another 8 weeks (you don’t need to veg the whole 8 weeks).
Week 3 is Week 1 on the vegetative chart
Mix nutrient solution at 600 - 900 ppm depending on size
Week 4
Mix nutrient solution at 900 -1200 ppm depending on size
Follow chart for additional weeks as required
When entering the Bloom Stage follow the medium feeding strength. (If growing indoors the bloom stage starts when the lights are switched to twelve hours of darkness and twelve hour of light).
Week 1- mix nutrient solution including supplements at 1000 ppm
Week 2 - mix nutrient solution including supplements at 1200 ppm
Week 3- mix nutrient solution including supplements at 1400 ppm
Week 4- mix nutrient solution including supplements at 1600 ppm
Week 5- mix nutrient solution including supplements at 1400 ppm
Week 6- mix nutrient solution including supplements at 1200 ppm
Week 7- Flush
The nutrient calculator is set for a 7 week strain; it can be customized for plants that require more than 7 weeks to complete their flower stage. Just click add a week.
The amounts suggested in the nutrient calculator are the total nutrient to feed the plant for a whole week, not the amount to give them per feeding.
If you want to give your plants nutrient solution more than once per week, divide the amount (total ppm) for the week by the number of feedings that you want to give them to calculate the ppm per feeding. A light cycle of plain ph adjusted water prior to commencing a new week’s feeding schedule will help prevent lock out conditions.
Plants may increase their over all size up to 2/3, during the bloom stage, for this reason the feeding schedules in the calculator increases the strength of the nutrient solution every week, reaching the highest concentration on the fourth week of bloom. If plant needs longer than 6 weeks of feeding (7 week strain, the 7Th week is a flush week), repeat week 4 for each extra week.
Always reduce the amount that you feed your plants during the last two weeks of feeding.
Overfeeding
If the very tip of the leaves gets yellow it is an early sign of overfeeding. Reduce the solution strength slightly (100 – 150 ppm), if not increase slightly.
Deficiencies
If the margins or any other part of the leaves yellows off it is a possible sign of deficiencies. Check pH in medium and reservoir, if the pH is off from the ideal levels look out conditions may develop. At first symptom of a deficiency apply rule # 1 (When in doubt flush them out).
If growing in a medium that takes some time to dry up, allow the medium to dry and feeding them plain pH adjusted water when they are ready. If growing in a re circulating system, find a way to give them only pH adjusted water for the length of a light cycle, a second reservoir just for water may be a simple solution, then it is just a matter of moving the pump over, maintain the regular water pump cycle during the flush.
pH conditions in medium
In Soil/Soiless (Soil or Soiless mixtures that may also contain peat moss but not Coco Coir) adjust the pH to 6.3
In Hydro (It includes products such as Rockwool, Hydroton Rock, and Lava Rock) adjust to 5.6
In Coco Coir adjust the ph to 5.8 – 6.0. You may want to supplement with SensiCal when growing in coco with a base nutrient that in not specific to growing in coco
Root damage
Another possibility is damage in the root zone, check for the possibility of root rot, or insect larvae as potential causes for root deterioration, brown, mushy, smelly roots are a good indicator of root damage. Hydrogen peroxide is an efficient way to destroy root rot causing bacteria.
Mixing instructions
If also using supplements follow feeding schedule in the nutrient calculator.
When using a re circulating system, you will be dealing with one of two situations, either the reservoir is large enough to feed the plants for a week without the need to be topped up during the week or it is a small reservoir and in order to feed the plants through the week it will require to be topped up.
In case of reservoir that does not need to be topped up.
Add to the reservoir the amount of water that the plants are going to be using for the week, include some extra water to allow for evaporation.
Mix the nutrient solution at 1/6th of the strength that is suggested in the calculator for that week.
Example: If the plants need 1200 ppm for the week, divide 1200 by 6 and mix the reservoir at 200 – 250 ppm.
Allow the solution to sit long enough to stabilize the pH. Adjust pH
Feed the plants.
Allow the plants to feed on the solution and the pH to rise for 1 1/2 – 2 days before re adjusting the pH.
In case of reservoir that needs to be topped up with water during the week.
Add to reservoir the amount of water that the plants will use in 3 – 3 ½ days.
Mix the nutrient solution at the strength that is suggested in the calculator for that week.
Allow the solution to sit long enough to stabilize the pH. Adjust pH
Feed the plants
Allow the plants to feed on the solution for 1 1/2 – 2 days, top up with water to the original level first before re adjusting the pH, after adding the water allow solution to sit for an hour and re adjust the pH.
If growing in soil adjust the pH 6.3, in coco 5.8 – 6.0, in hydro 5.6.
When using a re circulating system having the pH rise after you start feeding the plants is a good thing, It means that the plants are up taking nutrient, it is important that it rises the plants up take different nutrients at different pH levels, allow the pH to rise for 1 ½ - 2 days at that point adjust the pH down to 5.6 again
http://www.advancednutrients.com/hyd...alculator_old/ "
Here's a good break down from them:
"All of our products and formulas can be used in exactly the same way in all mediums. Mix the nutrient solution including any supplements that you are using, allow the solution to sit for at least ah hour or two, then adjust the pH to the level ideal for the medium that you are using. When growing in soil adjust the pH to 6.3, in hydro to pH 5.6 and when in coco coir, adjust to 5.8-6.0.
I am including a feeding guideline below.
Feeding Guideline
Don’t start feeding nutrients to rooting clones or seedlings such as the 2 part Sensi A & B (Grow) until they develop 3 or 4 sets of new/true leaves.
Until they develop 3 or 4 sets of new (clones)/true (seedlings) leaves feed them only water. You can foliar spray them with 1/4 strength B-52 (1 mL/liter) until then. You can also add 1/4 strength applications of Piranha, Tarantula and Voodoo Juice, to the water that you will use in the root zone.
Clones seedlings need high levels of moisture in the medium
(80% -85% is good 100% is too much)
They also like a warmer environment in the root zone 70 F – 80 F.
Entering the Vegetative stage, Use the Rooted Clones / Seedlings schedule in the nutrient calculator for the first two weeks of feeding)
Week 1
At 3 or 4 sets of new leaves mix nutrient solution at 300 ppm
Week 2
Mix nutrient solution at 600 ppm
Switch to Vegetative Stage feeding schedule if you are going to vegetate the plants longer than two weeks, the calculator goes up to another 8 weeks (you don’t need to veg the whole 8 weeks).
Week 3 is Week 1 on the vegetative chart
Mix nutrient solution at 600 - 900 ppm depending on size
Week 4
Mix nutrient solution at 900 -1200 ppm depending on size
Follow chart for additional weeks as required
When entering the Bloom Stage follow the medium feeding strength. (If growing indoors the bloom stage starts when the lights are switched to twelve hours of darkness and twelve hour of light).
Week 1- mix nutrient solution including supplements at 1000 ppm
Week 2 - mix nutrient solution including supplements at 1200 ppm
Week 3- mix nutrient solution including supplements at 1400 ppm
Week 4- mix nutrient solution including supplements at 1600 ppm
Week 5- mix nutrient solution including supplements at 1400 ppm
Week 6- mix nutrient solution including supplements at 1200 ppm
Week 7- Flush
The nutrient calculator is set for a 7 week strain; it can be customized for plants that require more than 7 weeks to complete their flower stage. Just click add a week.
The amounts suggested in the nutrient calculator are the total nutrient to feed the plant for a whole week, not the amount to give them per feeding.
If you want to give your plants nutrient solution more than once per week, divide the amount (total ppm) for the week by the number of feedings that you want to give them to calculate the ppm per feeding. A light cycle of plain ph adjusted water prior to commencing a new week’s feeding schedule will help prevent lock out conditions.
Plants may increase their over all size up to 2/3, during the bloom stage, for this reason the feeding schedules in the calculator increases the strength of the nutrient solution every week, reaching the highest concentration on the fourth week of bloom. If plant needs longer than 6 weeks of feeding (7 week strain, the 7Th week is a flush week), repeat week 4 for each extra week.
Always reduce the amount that you feed your plants during the last two weeks of feeding.
Overfeeding
If the very tip of the leaves gets yellow it is an early sign of overfeeding. Reduce the solution strength slightly (100 – 150 ppm), if not increase slightly.
Deficiencies
If the margins or any other part of the leaves yellows off it is a possible sign of deficiencies. Check pH in medium and reservoir, if the pH is off from the ideal levels look out conditions may develop. At first symptom of a deficiency apply rule # 1 (When in doubt flush them out).
If growing in a medium that takes some time to dry up, allow the medium to dry and feeding them plain pH adjusted water when they are ready. If growing in a re circulating system, find a way to give them only pH adjusted water for the length of a light cycle, a second reservoir just for water may be a simple solution, then it is just a matter of moving the pump over, maintain the regular water pump cycle during the flush.
pH conditions in medium
In Soil/Soiless (Soil or Soiless mixtures that may also contain peat moss but not Coco Coir) adjust the pH to 6.3
In Hydro (It includes products such as Rockwool, Hydroton Rock, and Lava Rock) adjust to 5.6
In Coco Coir adjust the ph to 5.8 – 6.0. You may want to supplement with SensiCal when growing in coco with a base nutrient that in not specific to growing in coco
Root damage
Another possibility is damage in the root zone, check for the possibility of root rot, or insect larvae as potential causes for root deterioration, brown, mushy, smelly roots are a good indicator of root damage. Hydrogen peroxide is an efficient way to destroy root rot causing bacteria.
Mixing instructions
If also using supplements follow feeding schedule in the nutrient calculator.
When using a re circulating system, you will be dealing with one of two situations, either the reservoir is large enough to feed the plants for a week without the need to be topped up during the week or it is a small reservoir and in order to feed the plants through the week it will require to be topped up.
In case of reservoir that does not need to be topped up.
Add to the reservoir the amount of water that the plants are going to be using for the week, include some extra water to allow for evaporation.
Mix the nutrient solution at 1/6th of the strength that is suggested in the calculator for that week.
Example: If the plants need 1200 ppm for the week, divide 1200 by 6 and mix the reservoir at 200 – 250 ppm.
Allow the solution to sit long enough to stabilize the pH. Adjust pH
Feed the plants.
Allow the plants to feed on the solution and the pH to rise for 1 1/2 – 2 days before re adjusting the pH.
In case of reservoir that needs to be topped up with water during the week.
Add to reservoir the amount of water that the plants will use in 3 – 3 ½ days.
Mix the nutrient solution at the strength that is suggested in the calculator for that week.
Allow the solution to sit long enough to stabilize the pH. Adjust pH
Feed the plants
Allow the plants to feed on the solution for 1 1/2 – 2 days, top up with water to the original level first before re adjusting the pH, after adding the water allow solution to sit for an hour and re adjust the pH.
If growing in soil adjust the pH 6.3, in coco 5.8 – 6.0, in hydro 5.6.
When using a re circulating system having the pH rise after you start feeding the plants is a good thing, It means that the plants are up taking nutrient, it is important that it rises the plants up take different nutrients at different pH levels, allow the pH to rise for 1 ½ - 2 days at that point adjust the pH down to 5.6 again
http://www.advancednutrients.com/hyd...alculator_old/ "