Hi RIU - Hoping for help here. Potency, taste and yield are not making the grade. 2 Master Kush and 2 Blackberry Kush from clones in DWC, tap water (135 PPM /7.2 ph) ph'd to 5.8 in veg and 6.0 in bloom. Using AN Jungle Juice 3 part series up to 700PM (includes ppm of tap water). Cal-mag, Superthrive and Aquashield added in veg. Cal-Mag, Liquid Koolbloom and Bud candy added in bloom. 3-5 day flush. Room Temp 72-74 degrees, water temps 68-70. Avg girl 32 inches and bushy. Yeilds about 1 oz dry per girl. Mixed cfls in veg, 600 watt HPS in bloom. Should I consider changing nutrient lines ,strains or what? lately noticing salt build up on sides of rez and ph takes longer to stabilize. Appreciate advice especially from experienced growers. Losing faith...What am I doing wrong?
Ok, time to reply with some opinion, instead of more attempts to fix what you have...
I run DWC in 5 gallon pails with plants in hydroton (Tried the new "stones" and had increased pH instability -went back to what works for ME).
Air temps 65-72, Humidity 45%, and water used is RO (so USE a Cal/Mag!). Lighting is 1K per 4x4 area, 24" above the canopy.
I run Hesi nutrients (Super clean nutrient) minus the supervit and add H&G Amino treatment at a rate of 1.1ml per gallon and Sea Green at the same rate to boost the Amino/vits/fulvics in flower, and superthrive in veg.
In Veg. I run Hesi's "roots" only at every complete refill ! (I'll explane how I "change nutes" at the end.)
Use the Hesi as per their feeding chart and with the above additives...pH after mixing!
Nutrient in the bucket is added back and complete changes like this.
I keep my nute level in the bucket 1/2 to 1 inch below the bottom of the "plant holder".
As the level goes down I add back a 33% nutrient concentration as needed until I have reached the TOTAL amount of nutrient solution in the bucket.
At this point I dump the "used" solution out and replace with fresh...
I have tried many different nutrients and find this is what works best for ME in a cost to benefit ratio....
Others I might suggest would be - Canna and Dynagrow.
Yes AN works ,, but I find it costly and don't like how they "run" their company...
This is the method that works best for ME.
If you must try to boost the P&K more then they say in the last 2 weeks of flower, simply add 5ml more of the PK 13/14 and try that.....But I would run straight first and adjust as needed from there!
Good Luck!