Flushing to correct PH/Mag Deficiency

tikitoker

Active Member
Hi all.

I am having what I suspect are PH problems in my Fox Farm Ocean Forest soil. My water goes in at 7-7.2 and runs off around 5. I did an experiment on one plant last night an flushed it: 3 gallon pot flushed with 9 gallons of water. Yet, my run off PH is still coming out around five. Can anybody make any suggestions about how to fix this issue? I transplanted to FFoF from 1 gallon coco a week ago. Could the Ph be from the coco left in the pots? I believe I am showing signs of a magnesium deficiency. Any advice would be much appreciated. I am under 2 600 HPS. Only fed them one time with FF nutes at 1/4 strength. Plants pictured are Jack Frost, about a month old. Thanks everybody.
chances are that the MG deficiency carried over from the coco and is now starting to show. spray with 1tsp/gallon Epsom salts, and sit back the FFOF will buffer itself and your plant will be back on the rebound in no time.
 

tikitoker

Active Member
if ph is coming out around 5.0+ in your runoff, i would suggest definitely flushing it.

make a mix, dilute it down to 400-500 ppms and leach it until ph is at least 6.3.

also, keep in mind on how you feed, because if the food is too strong it will bring you ph down. if it's weak, it will bring your ph up. if you find the range of food that the plants like, it will remain stable.
sounds like there is an excess of Nitrogen and that's whats lowering the PH runoff. Probably came from the fertilizer he added. Plus ... no need to feed if newly transplanted into FFOF, soil is good for 1 month as is.
 

SamsonsRiddle

Well-Known Member
I agree with john doe, the pH of the run off tells you nothing but the pH of the run off, nothing more, nothing less .. and who cares what your run off is ??
I grow in ffof all the time and have not once checked run off pH..
If you're having cal/ mag problems, buy some cal mag plus from any number of Nite co's, or try Epsom salts, although i can't vouche for that method personally..
I use cal mag plus from botanic are and love it.though .. some plants are notorious cal msg whores, like c99..
I hope the op doesn't care, but can i ask how you know c99 is a calmag whore? I'm currently running one in veg and would love any info. thanks
 
Top