I ve read that you should cut down on nutrients in the last few weeks of the plants life cycle,. Im not sure why though. According to ff trio , the recommended a flushing a few times during life cycle, again unclear as to why. Also i have hear that the actual times in the flowering cycle will vary depending on conditions of grow room or tent ect.ect. with all that said how does one know when to incorporate all this. Im very basic in my grows , to the point that i for the most part dont even flush. Indoor grows only, some better then others. Can anyone shed so.e light on this. I only ask because im curious as to why my flavor profiles are not there like i would expect. At least in my opinion. I even started using terpinator ,but im begin to think im using to many chemicals and its effecting my final product. I did do a test last grow , flushed a plant and didnt flush on the other. Personally i cant really tell a difference between the two, both super skunk. Thanks.in advance
FF nutes are very salty and periodic flushing is necessary to wash out mineral salts. Not flushing will result in a low pH due to the mineral salts present.
Nutrient demand naturally declines toward the end of a grow when the plant is done growing and all the plant is doing is ripening flower.
Very interesting. So should i just flush with water?
The process is more quick if you use a flushing agent like Sledgehammer or Florakleen.
Ok so i recon ill have to get that but in thw mean time should i do a flush , im in the 3rd week of flower now.
You can flush with water, it will just take a lot of time and patience. With each flush, take a ppm reading and when youre down to 400ppm , youre done. Feed after the flush check your runoff ph and ppm. Get your ppms around 1000
So being i never check runoff before. How important is all this. Not teiny to be funny. Just trying to get a better understanding on how to really get quality products. When you say feed after flush i assume you mean on the next cycle correct. Going to my local hydro store as we speak to see if they have sledgehammer. Also my next cycle is coming up and i just watered the other day, would it hurt to do a flush now or should i feed and flush next cycle.?
It critical. A salt buildup submarines your pH and creates a situation where a plant cannot absorb nutrients if pH gets too low.
Correct
As soon as you can get to it.
Which would ultimately slow growth and other important thing right.?
Essentially end up with a plant that isn’t healthy and won’t produce good results. A lockout essentially starves the plant of nutrients. Imagine how you would feel if you couldn’t eat.
Makes sense 
One more question and ill let you be for now lol. So i got the sledgehammer and a ppm meter. When doing this flush i assume you dont add any other nutrients, or can you just mix it all together.?
Water with Sledgehammer only. Flush until the runoff PPM is <400 PPM.
Im back just did a ppm check im at 942. I. At 3rd week of flower i must be in a bad if i should be at < 400. Correct. Not sur if it matters but i did a check on run off thats been sitting in drip pan for a day. I just watered them yesterday. If this is the case ill flush Thursday as i dont want to over water them. Hopefully i got all this sorted out. Thanks for your help as always .
Sorry to mislead. Runoff PPM should be maintained at ~1,000; however, it should be ~400 after a flush to ensure that all of the mineral salts are washed out. You can run it back up to ~1,000 after you get done flushing on the next watering.
If it helps, remember that overwatering is how often you water and not how much you water at one time. In normal circumstances - water until runoff and then let the soil dry out before watering again.
Overwatering is watering too often and not to much at once. In my ff days, i found that running the sledgehammer untill heavy runoff on each pot, then plain ph’ed water after about a half hour works best. The yucca and other parts of sledgehammer will pull the excess salts loose that are locked in the soil. One more important thing…IMO…is to feed full strength immediately after the flush. I would not wanna starve while im waiting to dry up aftet a flush right? The nutrients will not absorb the best being flushed and saturated…but they will atleast be there. Good luck.
Ok sounds good ill flush tonight and then feed them heavy on next cycle,
Good luck, and remember that periodic flushes are necessary with FF nutes due to the mineral salts in the product. You can avoid the need to flush altogether by switching to a less salty product like Jacks 321. Easy to use, very effective, and inexpensive.
I switched to Jacks a few years ago and have only had to flush a couple of times since. Certainly not multiple times every grow as is required with the FF product.
Definitely looks like something going on just flushed down to 400 ppm took little less then gallon per plant. Flushed and waited 10 minutes to check ppm
One gallon of water to get down to 400 ppm per plant? If they needed a flush it would have taken way more water, this was the preventative flush i assume? What was runoff ppm/ph before flush?